PATENT DOCUMENT

Publication Number: US-11567547-B2
Application Number: US-201916586814-A
Country: US
Kind Code: B2

Title: Computer tower architecture

Abstract:
A housing for an electronic device can include a body having an exterior surface and a second surface disposed opposite the exterior surface at least partially defining an interior volume, the body defining a first repeating pattern of apertures extending from the exterior surface to the second surface. The housing can also include a component defining a second repeating pattern of apertures, the component positioned adjacent to the second surface. The first repeating pattern of apertures and the second repeating pattern of apertures can combine to define an open area of at least about 70%.

Claims:
What is claimed is: 
     
       1. A housing for an electronic device, comprising:
 a body having an exterior surface and a second surface disposed opposite the exterior surface at least partially defining an interior volume; 
 the body defining a first repeating pattern of apertures having a first size extending from the exterior surface to the second surface; and 
 a component defining a second repeating pattern of apertures having a second size different than the first size, the component positioned adjacent to the second surface; 
 wherein an aperture of the first repeating pattern of apertures is aligned with at least two apertures of the second repeating pattern of apertures. 
 
     
     
       2. The housing of  claim 1 , wherein the first repeating pattern of apertures and the second repeating pattern of apertures reduce electromagnetic emissions by at least about 20 dBμV for frequencies between about 2 GHz and about 5 GHz. 
     
     
       3. The housing of  claim 1 , wherein the first repeating pattern of apertures form a continuous matrix of passageways. 
     
     
       4. The housing of  claim 1 , wherein the first repeating pattern of apertures and the second repeating pattern of apertures combine to define an open area of between about 75% and about 85%. 
     
     
       5. The housing of  claim 1 , wherein the component is bonded to the second surface by a pressure sensitive adhesive. 
     
     
       6. The housing of  claim 1 , wherein the component comprises a planar sheet of material having a thickness of about 3 mm. 
     
     
       7. The housing of  claim 1 , wherein the second repeating pattern of apertures comprises a pattern of circular apertures, each having a diameter of greater than about 2 mm. 
     
     
       8. The housing of  claim 1 ,
 wherein the first repeating pattern of apertures and the second repeating pattern of apertures further comprise apertures that are not aligned, and wherein the first repeating pattern of apertures and the second repeating pattern of apertures combine to define an open area of at least about 70%. 
 
     
     
       9. The housing of  claim 1 , wherein the first repeating pattern of apertures and the second repeating pattern of apertures combine to define an open area of at least about 70%.

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This claims priority to U.S. Provisional Patent Application No. 62/855,748, filed 31 May 2019, entitled “COMPUTER TOWER ARCHITECTURE,” the entire disclosure of which is hereby incorporated by reference. 
    
    
     FIELD 
     The described embodiments relate generally to enclosures. More particularly, the present embodiments relate to enclosures for electronic devices. 
     BACKGROUND 
     The components of an electronic device, for example, the processors, memory, and cooling apparatuses can partially determine a level of performance of the electronic device. The arrangement of these components relative to one another in the device, however, can also determine the level of performance of the electronic device. 
     Continued advances in electronic devices and their components have enabled considerable increases in performance. Existing components and structures for electronic devices can, however, limit the levels of performance of such devices. For example, an existing electronic device housing can limit the performance of an electronic device due to an inability to effectively distribute or remove heat generated by the components of the electronic device to the surrounding environment. Further, the components and their arrangement can also impact other properties of the device, such as the ability for a user to easily access and replace one or more of the components, the amount of noise generated by the device, the modularity and configurability of the device, and the cost of manufacturing the device. Consequently, further tailoring and arrangement of components for electronic devices to provide additional or enhanced functionality, without introducing or increasing undesirable device properties, can be desirable. 
     SUMMARY 
     According to one aspect of the present disclosure, a housing for an electronic device can include a body having an exterior surface and a second surface disposed opposite the exterior surface, the second surface at least partially defining an interior volume. The body defines a first repeating pattern of apertures extending therethrough from the exterior surface to the second surface, and a component defines a second repeating pattern of apertures extending therethrough, the component positioned substantially adjacent to the second surface in the interior volume. The first repeating pattern of apertures and the second repeating pattern of apertures can combine to define an open area of at least about 70%. 
     In some examples, the first repeating pattern of apertures defined by the body and the second repeating pattern of apertures defined by the component can reduce electromagnetic emissions therethrough by at least about 5, 10, 20, 30, or even more dBμV for frequencies between about 2 GHz and about 5 GHz. The body can define the first repeating pattern of apertures as a continuous matrix of passageways. The first repeating pattern of apertures and the second repeating pattern of apertures can combine to define an open area of between about 75% and about 85%. The component can be bonded to the second surface by a pressure sensitive adhesive. The component can be a substantially planar sheet of material having a thickness of about 3 mm. The component can define the second repeating pattern of apertures as a pattern of substantially circular apertures, each having a diameter of greater than about 2 mm. 
     According to some other aspects of the disclosure, an electronic device can include a housing defining an exterior surface including a recess, a port configured to receive and engage with a corresponding connector of a cable, and a component removably attachable to the housing to define an aperture sized to allow the cable to pass therethrough. The component can include a body, a pin sized to engage with the recess in the exterior surface to removably attach the component to the housing, the pin being at least partially retractable into the body when the body is removed from the housing. The aperture can be positioned relative to the port such that the cable is held at an angle of at least about 5°, 10°, 15°, 20°, or 30° or more relative to the connector when the connector is engaged with the port and the cable passes through the aperture. 
     In some examples, the component can further include a pin magnet that exerts an attractive force on the pin. The housing can include a housing magnet disposed substantially adjacent to the recess, the housing magnet exerting an attractive force on the pin stronger than the attractive force exerted by the component magnet to move the pin away from the body. The exterior can include a second recess, and the component can include a second pin sized to engage with the second recess to removably attach the component to the housing, the second pin being at least partially retractable into the body when the body is removed from the housing. The aperture can be oriented orthogonal to a direction of insertion of the connector into the port. The component can include a protrusion configured to engage with a portion of the housing to prevent removal of the component by a force exerted on the component in a direction parallel to a direction of insertion of the connector into the port. The component can be removable from the housing by exerting a force on the component in a direction orthogonal to the direction of insertion of the connector into the port. 
     According to some other aspects of the disclosure, a housing for an electronic device can include a body at least partially defining an exterior surface and an internal volume. The body can further define a cavity in a top portion of the exterior surface, a first antenna disposed in a first half of the cavity, a second antenna disposed in a second half of the cavity and oriented parallel and in line with the first antenna in the cavity, and an insert disposed in the cavity and extending substantially an entire length and width thereof. The first and second antenna disposed in the cavity can each be a dual-band antenna. The insert can overlie the first and second dual-band antennas and can define a first central slot aligned with the length of the cavity and can be positioned approximately at a midpoint of the width in the first half of the cavity that can be configured to allow electromagnetic radiation with a frequency of about 5 GHz to pass therethrough. The insert can also define a second central slot aligned with the length of the cavity and positioned approximately at a midpoint of the width in the second half of the cavity that can be configured to allow electromagnetic radiation with a frequency of about 5 GHz to pass therethrough. Moreover, a first pair of edge slots can be aligned with the first central slot and positioned along a perimeter of the insert in the first half of the cavity, the first pair of edge slots can be configured to allow electromagnetic radiation with a frequency of about 2.4 GHz to pass therethrough, and a second pair of edge slots can be aligned with the second central slot and can be positioned along the perimeter of the insert in the second half of the cavity, the second pair of edge slots can be configured to allow electromagnetic radiation with a frequency of about 2.4 GHz to pass therethrough. 
     In some examples, the housing can further include a seal including a material transparent to electromagnetic radiation having a frequency of greater than 2.4 GHz, the seal can be positioned in the cavity and can occlude the first central slot, the second central slot, the first pair of edge slots, and the second pair of edge slots. The cavity can have a depth of less than about 10 mm. The cavity can have a length and a width. The housing can further include a handle having a length and a width substantially similar to the length and the width of the cavity, the handle overlying the cavity. The body can further define a second cavity in the top portion of the exterior surface oriented parallel to the first cavity, the cavity further including a third dual-band antenna disposed in a first half of the second cavity, a fourth dual-band antenna disposed in a second half of the second cavity and oriented parallel and in line with the third dual-band antenna in the second cavity, a second insert disposed in the second cavity and extending substantially an entire length and width thereof. The second insert can overlie the third and fourth dual-band antennas and can define a third central slot aligned with the length of the second cavity and can be positioned approximately at a midpoint of the width in the first half of the second cavity and can be configured to allow electromagnetic radiation with a frequency of about 5 GHz to pass therethrough. The second insert can also define a fourth central slot aligned with the length of the second cavity and positioned approximately at a midpoint of the width in the second half of the second cavity that can be configured to allow electromagnetic radiation with a frequency of about 5 GHz to pass therethrough. Moreover, a third pair of edge slots can be aligned with the third central slot and can be positioned along a perimeter of the second insert in the first half of the second cavity, the third pair of edge slots can be configured to allow electromagnetic radiation with a frequency of about 2.4 GHz to pass therethrough, and a fourth pair of edge slots can be aligned with the fourth central slot and can be positioned along the perimeter of the second insert in the second half of the second cavity, the fourth pair of edge slots can be configured to allow electromagnetic radiation with a frequency of about 2.4 GHz to pass therethrough. 
     According some other aspects of the present disclosure, an electronic device can include a frame defining a space configured to receive a power supply unit, and a sleeve defining an internal volume sized to surround the frame, the sleeve being slidably removable from the frame, and the sleeve further defining an opening sized to receive an alternating current (AC) inlet of the power supply unit and expose the AC inlet to an exterior environment. The electronic device can also include a power supply unit including a body defining an exterior surface and an internal volume of the power supply unit and a contact to electrically connect the power supply unit to one or more electronic components of the electronic device to provide direct current (DC) power thereto. The AC inlet can be electrically connected to the contact and mechanically connected to the body by an arm within the internal volume of the power supply such that the AC inlet can be configured to move at least about 0.3 mm in two or more axes relative to the body of the power supply unit. 
     In some examples, the body of the power supply unit can include aluminum. The body of the power supply unit can have an approximately rectangular prismatic shape and can include a first component that defines a top exterior surface, a bottom exterior surface, and a first side exterior surface and a second component that defines a front exterior surface, a back exterior surface, and a second side exterior surface disposed opposite the first side exterior surface. The sleeve can further include a grounding member including an elongated body, a first set of arms extending from a first side of the body, and a second set of arms extending from a second side of the body opposite the first side, wherein the first set of arms and the second set of arms are offset from one another so that an arm of the second set is positioned between two arms of the first set when the first set of arms and the second set of arms are folded over the body. Each of the arms of the first set and the second set can be configured to act as a leaf spring when folded over the body to provide electrical grounding to the electronic device. The electronic device can further include a modular component including a processor and an attachment feature, wherein the frame further defines a space configured to receive the modular component. A clamp plate including an aperture, and an attachment member sized to extend at least partially through the aperture of the clamp plate can be configured to engage with the attachment feature of the modular component to retain the modular component in the space. 
     The sleeve can define a recess in a top surface thereof and can further include a handle affixed to the sleeve in the recess, the handle being moveable between a first stable position wherein the handle is disposed substantially entirely within the recess and substantially below the top surface of the sleeve, and a second stable position wherein the handle extends away from the top surface of the sleeve and is configured to be grabbed by a user. The handle can be rotatable with respect to the sleeve in the second stable position, wherein rotating the handle in the second stable position decouples the sleeve from the frame to allow the user to slidably remove the sleeve therefrom. The frame can define a slot including a first slot end and a second slot end positioned higher than the first slot end, and the handle connected to a pin configured to engage with a slot, wherein rotating the handle in the second stable position moves the pin from the first slot end to the second slot end such that the sleeve moves a distance relative to the frame corresponding to a difference in height between the first slot end and the second slot end. The sleeve can further include an input component positioned at a top surface thereof and connected to an electrical contact affixed to the sleeve, wherein the electrical contact is configured to engage with a corresponding electrical contact affixed to the frame such that an input detected by the input component at least partially determines whether the power supply unit provides power to the one or more electronic components. The sleeve can further include an indicator positioned at the top surface thereof, the indicator configured to provide a visible indicia of whether the power supply unit is providing power to the one or more electronic components. The frame can include one or more perforated plates disposed substantially adjacent to the one or more components of the electronic device and the power supply, wherein the sleeve cooperates with the one or more perforated plates to define an exterior surface of the electronic device and the one or more perforated plates allow airflow into the internal volume. The electronic device can further include one or more casters affixed to the frame and configured to physically support the electronic device, the one or more casters each including a ball bearing assembly and defining an aperture through a central portion thereof. The electronic device can include four casters affixed to a bottom portion of the frame. The frame can include a substantially hollow tubular portion extending substantially an entire height of the frame, the hollow tubular portion including an aperture in a sidewall thereof. A retaining component can be disposed within the hollow tubular portion and affixed thereto. An attachment member can be retained in the hollow tubular portion by the retaining component. The fixing member can be accessible by the aperture and can be configured to extend out of the hollow tubular member through an end portion thereof to be received by and to engage with a corresponding attachment feature of a component disposed substantially adjacent to the hollow tubular member. 
     According to some other aspects of the disclosure, an electronic device can include a processor, a backplate underlying the processor and defining a backplate aperture, a lifter defining a lifter aperture, the lifter disposed over the backplate and positioned substantially adjacent to an edge of the processor such that the lifter aperture is aligned with the backplate aperture. The lifter can further define an attachment feature configured to receive an attachment member. A spring can underlie the backplate and can be in line with the backplate aperture. The spring can be coupled to the backplate and the lifter by a retaining member passing through the spring, the backplate aperture, and the first lifter aperture. A heatsink assembly can overlie the processor and can include an attachment member, the heatsink assembly being coupled to the lifter by the attachment member engaging with the attachment feature. The backplate, the first lifter, and the second lifter can exert at least about 400 N on the processor through the heatsink assembly. 
     In some examples, the backplate can further define a second aperture and can further include a second lifter defining a second lifter aperture, the second lifter can be disposed over the backplate and can be positioned substantially adjacent to an edge of the processor opposite the first lifter such that the second lifter aperture is aligned with the second aperture. The second lifter can further define a second attachment feature configured to receive a second attachment member and a second spring underlying the backplate and in line with the second aperture. The second spring can be coupled to the backplate and the second lifter by a second retaining member passing through the second spring, the second aperture, and the second lifter aperture, wherein the heatsink assembly is coupled to the second lifter by the second attachment member engaging with the second attachment feature. 
     According to some aspects of the disclosure, an electronic device can include a frame configured to receive and support one or more electronic components and a shell defining an internal volume sized to surround the frame and the one or more electronic components, wherein the sleeve is slidably removable from the frame. An electronic component can be positioned within the internal volume and can include an aperture. A sealing member including a seal body can at least partially surround the electronic component. The sealing member can include a compressible lip extending from the seal body, wherein the lip can be oriented with respect to the seal body such that the shell compresses the lip in a direction against the seal body at a first position adjacent to the electronic component and in the direction against the seal body at a second position adjacent to the electronic component opposite the first position. Furthermore, the electronic component and the sealing member can divide the internal volume into a first zone and a second zone that are fluidically isolated, except at the aperture. 
     In some examples, the seal body can include a top portion located above the electronic component, a bottom portion located below the electronic component, and two side portions connecting the top portion to the bottom portion to define an aperture. The lip can extend from the seal body along substantially all of the top portion and all of the bottom portion such that the lip is compressible against the seal body in a same direction along the top portion and the bottom portion. The electronic component can include a main logic board having a first surface including a processor disposed thereon, and a second surface opposite the first surface including a memory component disposed thereon. A cover can be included on the electronic component, the cover being movable between a closed position overlying and substantially surrounding the memory component and an open position exposing the memory component. A latch can be coupled to the cover and can be movable between a first position and a second position. The latch can be configured to secure and retain the cover in the closed position when in the first position, wherein moving the latch to the second position allows the cover to move to the open position and includes a visible indicia to indicate the cover is in the open position. The latch can include a spring configured to force the cover into the open position when the latch is moved to the second position. The cover can be configured to direct airflow entering the internal volume over the memory component. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which: 
         FIG.  1    illustrates a perspective system view of a computing system including an electronic device. 
         FIG.  2    illustrates a front perspective view of an electronic device. 
         FIG.  3    illustrates a rear perspective view of the electronic device of  FIG.  2   . 
         FIG.  4    illustrates a front perspective view of an electronic device. 
         FIG.  5 A  illustrates a partially exploded front perspective view of components of an electronic device. 
         FIG.  5 B  illustrates a partially exploded rear perspective view of components of an electronic device. 
         FIG.  6 A  illustrates a close-up view of a portion of an electronic device. 
         FIG.  6 B  illustrates a top view of a portion of an electronic device. 
         FIG.  7 A  illustrates a perspective view of a component of an electronic device. 
         FIG.  7 B  illustrates a perspective view of the component of an electronic device of  FIG.  7 A  in an alternate configuration. 
         FIG.  8 A  illustrates an exploded view of various components of an electronic device. 
         FIG.  8 B  illustrates a top view of a component of an electronic device. 
         FIG.  9 A  illustrates a sectioned front view of components of an electronic device. 
         FIG.  9 B  illustrates a cross-sectional side view of the components of  FIG.  9   . 
         FIG.  10 A  illustrates a perspective view of a portion of a structure of a component of  FIG.  9   . 
         FIG.  10 B  illustrates a top view of the portion of a structure. 
         FIG.  10 C  illustrates a rear view of the portion of the structure of  FIG.  10 B . 
         FIG.  10 D  illustrates a front view of the portion of the structure of  FIG.  10 B . 
         FIG.  10 E  illustrates a cross-sectional view of the portion of the structure of  FIG.  10 B . 
         FIG.  10 F  illustrates a perspective view of the spherical recesses of the structure of  FIG.  10 B . 
         FIG.  11 A  illustrates a cross-sectional view of components of an electronic device. 
         FIG.  11 B  illustrates an exploded view of components of an electronic device. 
         FIG.  11 C  illustrates a front perspective view of a component of an electronic device. 
         FIG.  11 D  illustrates a rear perspective view of a component of an electronic device. 
         FIG.  12    illustrates a perspective front view of the interior of an electronic device. 
         FIG.  13 A  illustrates an exploded cross-sectional view of a portion of an electronic device. 
         FIG.  13 B  illustrates a cross-sectional perspective view of a component of an electronic device. 
         FIG.  13 C  illustrates a cross-sectional side view of a component of an electronic device. 
         FIG.  14    illustrates a perspective rear view of the interior of the electronic device of  FIG.  12   . 
         FIG.  15    illustrates a perspective rear view of the interior of the electronic device of  FIG.  12    including components in an alternate configuration. 
         FIG.  16    illustrates an exploded view of the interior of the electronic device of  FIG.  12   . 
         FIGS.  17 A-C  illustrate various views of a component of an electronic device. 
         FIG.  18    illustrates a side perspective view of a component of an electronic device. 
         FIG.  19    illustrates a side perspective view of the component of  FIG.  18   . 
         FIG.  20    illustrates a partially exploded perspective view of an electronic device. 
         FIG.  21    illustrates a cross-sectional view of a component of  FIG.  20   . 
         FIG.  22    illustrates a perspective view of a component of an electronic device. 
         FIGS.  23 A-B  illustrate top views of the component of  FIG.  22    in various configurations. 
         FIG.  24    illustrates an exploded cutaway view of a component of an electronic device. 
         FIG.  25    illustrates a cross-sectional perspective view of the component of  FIG.  24   . 
         FIG.  26    illustrates a perspective view of a component of an electronic device. 
         FIG.  27    illustrates a side view of the component of  FIG.  26   . 
         FIG.  28    illustrates a top view of the component of  FIG.  26   . 
     
    
    
     DETAILED DESCRIPTION 
     The present description provides examples, and is not limiting of the scope, applicability, or configuration set forth in the claims. Thus, it will be understood that changes can be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure, and various embodiments can omit, substitute, or add other procedures or components, as appropriate. For instance, methods described can be performed in an order different from that described, and various steps can be added, omitted, or combined. Also, features described with respect to some embodiments can be combined in other embodiments. 
     One aspect of the present disclosure relates to an electronic device including a frame configured to receive and attach removable electronic components thereto. The electronic device can further include a shell that defines an internal volume sized to encompass the frame and electronic components. The shell can be removably affixed to the frame and can cooperate with portions of the frame to define the exterior surface of the electronic device. An electronic component positioned within the internal volume, such as a logic board, can divide the internal volume into one or more zones and can substantially fluidically isolate the first and second zones, except at one or more apertures defined by the component, through which the zones can fluidically communicate. The electronic device can include a first air-moving apparatus, for example, one or more fans, that produces a positive pressure in the first zone and a second air-moving apparatus, for example, a blower, that produces a negative pressure in the second zone. The electronic device can also include a number of additional features and components that can allow for desired levels of device performance, allow for desired levels of accessibility and modularity for components of the device, and that can provide for a desired user experience with the electronic device. 
     In some examples, the components of an electronic device and their arrangement can allow for a desired user experience with respect to various features of the electronic device. In some examples, a user can interact with an electronic device in a number of ways, including physical interactions with various components of the electronic device, in order to perform certain tasks with the device. For example, in some examples, a user can add, remove, or replace one or more components of the device in order to give the device a desired level of performance, to allow the device to perform certain tasks, to enable certain features, or to customize the device as desired. In some examples, the components of an electronic device and their arrangement can enable a user to add, remove, or replace components in a relatively simple manner that reduces the risk of incorrectly adding, removing, or replacing components and that simultaneously allows a high level of access to the components by the user or a technician. 
     Traditional electronic devices, such as computer towers, include housings that typically only allow a user to access a single side of the device once the housing is removed. In one example, as described herein, the shell of the present exemplary electronic device can be removable from the frame by unlocking the shell and sliding it off of the frame. Once the shell has been removed, a user can access zones or volumes on, for example, a left side and a right side of the device. Further, the components inside the internal volume of the device that can be exposed when the shell is removed or decoupled from the frame can include features that allow for easy removal, addition, and/or replacement. For example, the frame can include attachment features that allow a user to easily slide a component into a space defined by the frame, whereupon the attachment features can engage with the component to secure it to the frame without the need for numerous or difficult to use attachment hardware. This increased level of access to components inside the internal volume of the device, as defined at least partially by the shell, can allow for the user to easily configure the electronic device as desired. 
     In some examples, the position of one or more components with respect to other components of the device, as well as the device itself, can allow for a desired level of performance and a desired user experience. In some examples, the electronic device can include a housing that defines a cavity in a top surface of the electronic device and one or more antennas disposed in the cavity. In some examples, these antennas can be Wi-Fi antennas, Bluetooth antennas, cellular antennas, and similar wireless signal antennas. The cavity can be positioned on the top surface of the device in a location configured to provide a high level of performance with respect to the transmission and reception of wireless signals. Further, the antennas can be located under other functional features on the top surface of the device, such as handles, to prevent a user from incidentally blocking some portion of the antenna without the need for additional hardware. In this way, the performance of the device can achieve a desired level based on component orientation and geometry, as well as by the ability of certain components to perform multiple desired functions. 
     The components and their arrangement within an internal volume of a typical electronic device can create airflow dead spots within the internal volume. That is, there can be locations in the internal volume where the airflow is insufficient to adequately remove heat from the device. These dead spots can be caused by the spatial arrangement of the components within the electronic device, or by canceling interference between airflow from competing fans. Accordingly, these dead spots can demand additional or more powerful fans to be incorporated into the device to achieve a desired level of performance. The use of additional or more powerful fans can, however, increase the noise produced by the electronic device, or can require more space with which to house the fans, thereby undesirably increasing the overall size of the electronic device. Another way in which airflow and heat removal is traditionally enhanced in an electronic device is by providing more space within the internal volume for air to flow amongst the components that require cooling. However, adding space in the internal volume to allow airflow can also undesirably increase the overall volume of the electronic device. 
     Accordingly, it is desirable to design and arrange the components of an electronic device to produce airflow pathways that can effectively remove or redistribute heat in the electronic device without the need for a significant increase in the internal volume of the electronic device, or for a high powered and noisy air-moving system, for example, by including an undesirably large number of fans. In some examples, the housing or shell of an electronic device can include features that provide for desired levels of airflow and enable desired levels of thermal management. For example, the shell can define a number of perforations or apertures in one or more surfaces to allow for airflow to pass therethrough. Further, the apertures can be arranged and the shell can have a shape or a geometry that defines the apertures such that a high amount of air can pass through the shell without producing high levels of noise. Further, the apertures defined by the shell can have a large surface area, as compared to direct and unconnected through holes. This high amount of surface area can serve to greatly increase the ability of the electronic device to transport heat away from itself or away from other components, for example, by direct convection to the surrounding air. 
     The electronic device can further include components that cooperate with the shell to provide a desired level of electromagnetic shielding while still maintaining a desired level of airflow and thermal management. For example, the electronic device can include a sheet or panel defining a second set of apertures that cooperate with the apertures or perforations of the shell to act as an electromagnetic interference (EMI) and/or electromagnetic compatibility (EMC) noise shield for other components of the electronic device. 
     Users of electronic devices, such as desktop computers, often seek to replace one or more of the internal components of the computer. For example, if advances in technology result in the production of a more powerful graphics processing unit (GPU), a user may seek to replace the existing GPU within their electronic device with the more powerful GPU. It can be desirable for the components of the electronic device to be easily accessible and replaceable by a user or technician. Thus, in addition to the desirable airflow and heat removal features described herein, the arrangement and design of the components of an electronic device, such as the housing, can also provide users with access to one or more components of the electronic device. 
     Traditional desktop computers typically provide access to the internal components on only one side of the device. Accordingly, traditional components are arranged within the desktop computer so that they are accessible and removable from a single side of the device. Such an arrangement, however, may not be compatible with a space efficient component arrangement that produces a desirable amount of airflow through or within the electronic device. This tension between accessibility and thermal management can again lead to dead spots and the need for a larger housing or an undesirably large number of fans, thereby increasing the device size, or resulting in a device that produces a high level of noise during operation. 
     In some examples, the components and processes for forming and assembling the components described herein can be used to provide electronic devices that utilize multiple isolated volumes or zones which can cooperate to produce a desired level of thermal management without requiring extremely powerful or large air-moving systems, while still providing access to the components for a user or a technician of the electronic device. 
     Further, the components of the electronic device can be formed and arranged to allow for high configurability, modularity, and accessibility, while minimizing the overall volume and size of the electronic device. In some examples, the multiple zones of the electronic device can be isolated by a seal, but can communicate at select locations to efficiently control and direct airflow provided by an air-moving system. For example, one zone can have a positive air pressure with respect to the ambient environment, while another zone can have a negative air pressure with respect to the ambient environment. The pressure in each zone can be controlled by the air-moving system to provide for airflow into, out of, and between the zones, to achieve a desirable level of thermal management for the components of the electronic device. 
       FIG.  1    shows a computing system including an electronic device  100 . The electronic device  100  shown in  FIG.  1    is a computer, for example, a desktop computer, and can be connected to a display or monitor  110 . This is, however, merely one representative example of a device that can be used in conjunction with the ideas disclosed herein. The electronic device  100  can, for example, correspond to a portable media player, a media storage device, a portable digital assistant (“PDA”), a tablet computer, a display, a mobile communication device, a GPS unit, a remote control device, and similar electronic devices. The electronic device  100  can be referred to as an electronic device or a consumer device. As shown, the electronic device  100  can also be connected to any number of input devices such as a keyboard  120 , a mouse  130 , a track pad, a stylus, a microphone, or any combination of known input devices. Further detail of the electronic device  100  is illustrated in  FIG.  2   . 
       FIG.  2    illustrates an electronic device  200 , for example, as used in the computing system shown in  FIG.  1   . The electronic device  200  can be connected to a display and one or more input devices. The electronic device  200  is configured for placement upon, underneath, or adjacent to a work surface, such as a table or a desk. In some examples, the electronic device  200  of the computing system can be referred to as a desktop computer. The electronic device  200  can include multiple internal electronic components including at least a central processing unit (CPU), in some examples, located on one or more logic boards, such as a main logic board, one or more graphics processing unit (GPU) boards, and other primary and secondary internal components. The electronic device  200  can also include a housing  201  that can define an internal volume of the electronic device  200  and can at least partially define an external surface of the electronic device  200 . Although the housing  201  of electronic device  200  is illustrated as having an approximately rectangular shape, in some examples the electronic device  200  and housing  201  can assume substantially any shape, as desired. In some embodiments, the electronic device can also be coupled to other electronic devices to form a multi-computer system that can be used, for example, as a server computer system (such as in a data farm) or as a network computing system having each electronic device  200  as a node (or nodes). 
     In some examples, the electronic device  200  can include a housing  201  that can define an internal volume, within which the internal components of the electronic device are disposed. The housing  201  can be easily removed for user access or servicing. The housing  201  can include a metallic material, such as stainless steel or aluminum. In some examples, the housing  201  can have an anodized aluminum oxide layer that both protects the housing  201  and promotes heat transfer for cooling the internal volume. In some examples where the housing  201  includes a metal such as aluminum, the electrical conductivity of the housing  201  can provide a ground for internal electrical components arranged to fit and operate within the housing  201 . The housing  201  can also provide an electromagnetic interference (EMI) shield to protect sensitive electronic components from external electromagnetic energy, as well as reducing an amount of electromagnetic energy emanating from internal components within the electronic device from penetrating the housing  201 , thereby providing a desired level of electromagnetic compatibility (EMC). 
     The housing  201  can include a mechanism  214 , such as a mechanical latch, which can be used to couple the housing  201  of the electronic device  200  securely to internal structures of the electronic device  200 , as described further herein. The mechanism  214  can take the form of a twisting latch or other such operable mechanism that can be manually engaged and disengaged, for example, by a user or technician. In this way, the housing  201  can be easily removed in order to expose internal components and structures of the electronic device  200  for user maintenance, upgrade, or servicing by a technician. In some examples, a detection circuit (not shown) of the electronic device  200  can be used to detect whether the housing  201  is properly situated in place with respect to internal components and structures. The detection circuit can serve a useful function, as the thermal management strategy of electronic device  200  can rely on the proper placement and use of the housing  201  in combination with the arrangement of internal components and an air-moving system within the internal volume defined by the housing  201 . 
     In some examples, the detection circuit can determine that the housing  201  is not in proper placement or alignment with respect to internal structures or components of the electronic device  200 , and the detection circuit can prevent the electronic device  200  from operating, or at least from operating at full capacity. In some examples, the detection circuit can include a magnetic sensor (such as a Hall Effect device) located to detect one or more magnets disposed on the housing  201  when the external housing  201  is properly placed and aligned on the electronic device  200 . The housing  201  can also include one or more features, such as handles  212  that can allow for a user or technician to handle or transport the electronic device  200 . 
     The housing  201  can further include one or more support features  216 , for example, in the form of feet or wheels. The support features  216  can serve to provide a physical support for the electronic device  200  when it is resting on a surface, and can further prevent a large surface of the housing  201  from directly contacting the surface on which it is positioned. In this way, the support features  216  can provide a space between the housing  201  and the surface in order to allow air to flow therethrough and thereby assist in the thermal management of the electronic device  200 . 
     A number of apertures, holes, perforations, or passageways  210  can be formed in a front surface of the housing  201  that can provide fluid communication between the ambient environment and the internal volume defined by the housing  201 . The apertures  210  can be substantially any shape, but in some examples, can be circular or spherical, as described herein. In some examples, the apertures  210  can allow for direct fluid communication between the ambient environment and the internal volume. In some examples, however, the apertures  210  can allow for fluid communication between the ambient environment and the internal volume through one or more components, such as an air-moving apparatus or system, as described herein. 
     In some examples, the apertures or holes  210  can be in the form of a three-dimensional structure that can include spherical recesses that interfere or intersect with each other to create through holes  210  arranged in specified patterns. The spherical recesses can have a base form of three spherical recesses in a common plane that at least partially intersect or interfere with one another, and a fourth spherical recess on an adjacent plane that intersects or interferes with each of the three spherical recesses to create a network of interconnected through holes  210 . This base form can then be propagated or repeated throughout the structure to form the aggregate three-dimensional structure. For example, where the housing  201  includes such a three-dimensional structure, the structure can maximize both surface area and aperture  210  distribution for thermal transfer, while maintaining a robust structural lattice. That is, a housing  201  including the interconnected through holes  210  can optimize its ability to distribute or remove heat from the electronic device  200 , while remaining both light and strong, thereby improving performance of the electronic device  200  compared to traditional monolithic or closed contiguous structures. 
     In some examples, the three-dimensional structure or structures defining the apertures  210  can be included as a portion or region of the housing or shell, such as a portion of the housing or shell defining a first exterior surface and a second interior surface. In some examples, the portion of the housing can be a unitary body, for example, a unitary body formed by a single piece, section, or portion of a material. The first surface and the second surface of the body can be opposing surfaces. At least a portion of the housing can include a three-dimensional pattern or matrix of apertures or passageways therein. In some embodiments, the three-dimensional pattern can extend through at least a portion or region of the housing or substantially throughout the entire housing. The three-dimensional pattern can extend across one or more of an entire height, width, and depth of the housing, or a portion thereof. The three-dimensional pattern or matrix can be formed or be defined by a combination of one or more cavities extending into the housing from the first surface, and one or more cavities extending into the housing from the second surface of the housing. 
     In some examples, the one or more cavities extending into the housing from the first surface can intersect with one or more of the cavities extending into the housing from the second surface, to form the three-dimensional pattern or matrix. That is, in some examples, the negative space of a cavity extending into the housing from the first surface of the housing can intersect or interfere with the negative space of one or more cavities extending into the housing from the second surface of the housing. Further, in some embodiments, the cavities can eccentrically intersect, merge, or interfere to form an aperture  210 . The aperture or apertures  210  can be through-holes in the housing. As used herein, the term aperture can refer to a hole in a body that passes entirely through the body. In some embodiments, the three-dimensional pattern of apertures  210 , as described herein, can have a surface area that is up to twice as large, up to five times as large, up to ten times as large, or even several orders of magnitude larger than the surface area of a similarly sized and shaped housing that does not include the three-dimensional pattern of apertures  210 . This high amount of surface area can serve to greatly increase the ability of the housing to transport thermal energy or heat away from itself or away from other components of an electronic device, for example, by direct convection to the surrounding air. In some examples, the cavities extending into the housing from a surface of the housing can be arranged in a pattern. This pattern can be a regular or repeating pattern of cavities that extends throughout a portion of a surface, or in some examples, substantially an entire surface of the housing. 
     In some examples, the housing or shell  201  can include an input component disposed on an exterior surface thereof that is operable by a user to at least partially control the power state of the electronic device  200 . For example, the shell  201  can include an input component  225  that can receive input from a user and can at least partially determine whether a power supply unit provides power to the one or more electronic components of the electronic device  200 . Thus, in some examples, the input component  225  can function as an on/off switch or control for the electronic device  200 . In some examples, the input component  225  can take the form of a button, a switch, a touch sensor, and/or combinations thereof. Further, in some examples, the input component  225  can be disposed on the housing  201  at a location that is convenient for a user to operate, such as a top surface of the housing  201 . In some examples, the input component  225  accepts a user touch to initiate a power on sequence (including, for example, a boot up process) as well as a power down sequence. In some examples, the input component  225  can be illuminated and provide an activity indication to a user, e.g., under software control of a processing unit in the electronic device  200 . 
     The housing  201 , can also include one or more ports  223  disposed at a location on the housing  201  that is convenient for a user to quickly and readily access. In some examples, the port or ports  223  can be configured to receive and connect or engage with cables or additional electronic devices, and can facilitate the transfer of power or signals to or from the electronic device  200 . While the electronic device  200  can include numerous ports at various locations, as described herein, one or more ports  223  can be disposed, for example, on a top surface of the housing  201 , to maximize ease of use and access by a user. In some examples, the ports  223  can include Universal Serial Bus-type (USB) ports, and Thunderbolt ports. 
     The electronic device  200  can also include one or more visual indicators  221  integrated into and positioned on the housing  201  at a location that is readily visible by a user. For example, a visual indicator  221  can be positioned on a top surface of the housing  201 . In some examples, the visual indicator  221  can be positioned substantially adjacent to or near the input component  225  of the electronic device  200 . In some examples, the visual indicator  221  can provide a visible indicia of whether power is being supplied to one or more components of the electronic device  200 . In other words, the visual indicator  221  can provide a visible indicia of whether the electronic device  200  is in an ‘on’ or an ‘off’ state. In some examples, the visual indicator  221  can provide a visible indicia of other states of the electronic device  200 , for example, whether the electronic device  200  is performing certain processes, receiving transmitted data, and/or experiencing an error. The visual indicator  221  can include one or more lights, such as LED lights, and can provide the visual indicia by illuminating the light or lights, or by illuminating a light of a certain color. For example, a green LED can be illuminated to indicate an ‘on’ state and a red LED can be illuminated to indicate an ‘off’ state. In some examples, the visual indicator  221  can be illuminated and provide an activity indication to a user, e.g., under software control of a processing unit in the electronic device  200 . 
     In some examples, the housing  201  of the electronic device  200  can define one or more recesses or cavities in a surface thereof configured to receive one or more antenna components. For example, a top surface of the shell  201  can include a cavity and can include an antenna component  226  disposed in the cavity and connected to one or more other components of the electronic device  200 . The housing  201  can include a second cavity and a second antenna component  228  disposed at a second, different location on the housing  201 . As described further herein, in some examples, an insert can be sized to correspond to the cavity and/or the antenna component  226 ,  228  and can overlie, underlie, and/or surround the antenna component  226 ,  228  to provide a surface that is substantially flush or in line with a surface of the housing  201 , such as the top surface, while being substantially transparent to the electromagnetic spectrum in frequencies utilized by the antenna component  226 ,  228  while providing a desired aesthetic appearance. Further, in some examples, the antenna component, for example, antenna component  226 , can be disposed at a location on the housing  201  that can prevent or discourage occlusion, or partial occlusion and its subsequent reduction in performance, by a user resting an object on the top surface of the electronic device  200 . For example, the antenna components  226 ,  228  can be disposed under the handles  212  of the electronic device  200 . Additional views of the electronic device are detailed below with reference to  FIG.  3   . 
     As shown in  FIG.  3   , in some examples, the housing  201  of the electronic device  200  can include an interface panel  220  located on a rear surface of the housing  201 . The interface panel  220  can include various ports  222  that can be used to communicate data and/or power between the electronic device  200  and various external systems. For example, the interface panel  220  can include a set of audio ports that can be used to provide an audio stream to an external audio system, such as headphones, speakers, or an audio processor. The set of audio ports can also be used to receive an audio stream from an external audio system, such as a microphone or an audio recording device. The interface panel  220  can also include one or more ports, including one or more bus ports, one or more high-speed expansion ports, one or more networking ports, and/or one or more video ports. The data ports can be used to transfer data and/or power between one or more external circuits and the electronic device  200 . The data ports can be used to accommodate a broad range of data connections according to different wired data communication protocols, for example, one or more Universal Serial Bus (USB) ports, one or more Thunderbolt high speed expansion ports, one or more Ethernet networking ports, one or more high definition media interface (HDMI) ports, and/or other data ports. 
     The electronic device  200  can be interconnected to other computing systems through one or more of the data ports provided on the interface panel  220 , e.g., to data storage devices, portable media players, and/or video equipment, to form a network of computing systems. Accordingly, the interface panel  220  and associated data ports of the electronic device  200  can be used to form connections from the electronic device  200  to a large number and variety of external computing systems and circuits, which can prove particularly useful when a large amount of computing resources is desired. Moreover, the size and shape of the electronic device  200  can lend itself to space efficient computing networks or data farms, in some representative embodiments and uses. 
     The interface panel  220  can also include a video port that can be used to communicate high-speed video between the electronic device  200  and an external video monitor or other external video processing circuitry, for example, as shown in  FIG.  1   . The interface panel  220  can include an alternating current (AC) power input port  224 , which can be sized and shaped to accept a power plug suitable for transferring external power to operational electronic components within the housing  201 , for example, through a power supply unit, as described herein. In some examples, the electronic device  200  can include internal power resources (such as a battery) that can be charged and re-charged in accordance with power delivered by way of power input port  224 . 
     The housing  201  can also include or define a number of apertures, holes, perforations, or passageways  211 , for example, formed in a rear surface of the housing  201 . The holes  211  can be substantially similar to the holes  210  described with respect to  FIG.  2    and can provide fluid communication between the ambient environment and the internal volume defined by the housing  201 . The apertures  211  can be substantially any shape, but in some examples, can be circular or spherical, as described herein. In some examples, the apertures  211  can allow for direct fluid communication between the ambient environment and the internal volume. In some examples, however, the apertures  211  can allow for fluid communication between the ambient environment and the internal volume through one or more components, such as an air-moving apparatus or system, as described herein. 
     In some examples, the electronic device can include a cable retention or cable management component  230 . The cable retention component  230  can engage with a portion of the housing  201 , such as a recess or slot, and be removable from the housing  201  by a user. As described further herein, in some examples, the cable retention component  230  can be secured by a magnet of the housing  201  that is disposed adjacent to the area where the cable retention component  230  is to be positioned. The cable retention component  230  can at least partially define an aperture and can combine with the housing  201 , when attached thereto, to define an aperture sized to allow one or more cables to pass therethrough. In some examples, where one or more cables can be connected to the ports  222  of the interface panel  220 , the cables can pass through the aperture defined by the cable retention component  230  and the housing  201 . Further, in some examples, the aperture can be disposed substantially perpendicular to the direction of insertion of the cable connectors into the ports  222 . Thus, in some examples, the aperture defined by the cable retention component  230  and the housing  201  can maintain a cable passing therethrough at an angle of at least about 5°, 10°, 15°, 20°, or 30° or more relative to the connector when the connector is engaged with the port  222 . By maintaining such a cable orientation, the cable retention component  230  can prevent or inhibit accidental removal of one or more cables if a user moves the electronic device  200 . The angle of the cable relative to the connector and the port  222  can, for example, ensure that a desired amount of force, for example, greater than about 100 N of force, is required to remove the cable while the cable retention component  230  is attached to the housing. Additional examples or configurations of the electronic device  200  are provided below with reference to  FIG.  4   . 
     Turning now to  FIG.  4   , as described herein, in some examples an electronic device  200  can include one or more support features  216  that serve to provide a physical support for the electronic device  200  when it is resting on a surface, and can further prevent a large surface of the housing  201  from directly contacting the surface on which it is positioned. While the support features  216  can include feet as described herein, in some other examples, the support features  216  can include wheels or casters, as shown in  FIG.  4   . In some examples, the electronic device  200  can include four casters, each positioned approximately at a corner region of a bottom plate of the housing  201 . In some examples, the casters  216  can allow the electronic device  200  to be easily rolled by a user, as desired. In some examples, a caster  216  can include a wheel and ball bearings that allow for the wheel to rotate. Further, in some examples, a central portion of the caster  216 , such as an axle, can be substantially hollow or have an aperture therethrough. Additional embodiments of the structure and arrangement of an electronic device including a housing defining an internal volume divided into one or more zones by a component or components within the internal volume are described below, with reference to  FIGS.  5 A-B . 
       FIG.  5 A  illustrates a partially exploded perspective view of an electronic device  400  including a shell component  401  separated from a frame or chassis component  440 . The electronic device  400  can be, for example, a desktop computer and can be substantially similar to, and can include any of the features of the electronic devices  100  and  200  described herein. The housing of electronic device  400  can be substantially similar to the housing  201 , described herein, that can define an internal volume and an exterior surface of the electronic device  400 . 
     As can be seen in  FIG.  5 A , the housing can include a shell  401  that can define an internal volume sized to encompass portions of the frame  440  and the electronic components received and supported by the frame  440 , as described herein. The shell  401  can couple with the frame  440  to define the exterior surface of the housing. In some examples, shown in  FIG.  5 A , the shell  401  can be integrally removed from the frame  440 , for example, by a user. In some examples, the shell  401  can be coupled to the frame  440  by a locking mechanism that can have a locked state and an unlocked state. In the locked state, the shell  401  is retained on the frame  440 , for example, as illustrated in  FIGS.  2 - 3   , while in the unlocked state, the shell  401  can be removed from the frame, as desired, for example, by a user lifting or sliding the shell  401  off of the frame  440 . 
     The shell  401  can include a top panel  402  that can at least partially define an exterior surface of the housing, for example, the top surface thereof. In some examples, the top panel  402  can include or define one or more apertures  403  that can allow a portion of the frame  440  to extend therethrough. For example, the frame  440  can include a handle or handles  409  that can pass through the apertures  403  of the top panel  402 , and that can be exposed to the exterior environment. The shell  401  can further include a number of panels that are coupled or affixed to the top panel  402  and that extend therefrom, for example, that extend from and are normal to the top panel  402 . The shell  401  can include a first panel or front panel  404  that can be substantially an entire height of the electronic device  400 . In some examples, the front panel  404  can define a number of apertures, holes, perforations, or passageways  410  that extend therethrough and that can provide fluid communication between the ambient environment and the internal volume defined by the shell  401 . In some examples, the apertures  410  can be substantially similar to apertures  210  described herein. 
     In some examples, the shell  401  can further include a mesh or perforated component  408  that can be coupled to or disposed substantially adjacent to the surface of the front panel  404 . The mesh  408  at least partially defines the internal volume. In some examples, the mesh  408  can substantially cover the apertures  410  such that any fluid, such as air, that passes through the apertures  410  must also pass through the mesh  408 . The mesh can include apertures or perforations of substantially any size, shape, or distribution. 
       FIG.  5 B  illustrates a partially exploded rear perspective view of the electronic device  400  including the shell  401  separated from the frame  440 . As can be seen, the frame  440  can include a port panel or interface panel  442  that can include one or more ports and can be substantially similar to interface panel  220 . The frame  440  can also include a floor panel or bottom panel  444  that can at least partially define the internal volume of the device as well as the external surface of the device. When the shell  401  is positioned over the frame  440  it can engage with the bottom panel  444 , for example, at the periphery to at least partially define the exterior surface and the internal volume of the device. The interface panel  442  can be coupled to and disposed substantially normal to the bottom panel  444  and can further define the exterior surface and the internal volume of the electronic device  400 . 
     The shell  401  can include a second panel or rear panel  405  that can be substantially an entire height of the electronic device  400 . In some examples, the rear panel  405  can define a number of apertures, holes, perforations, or passageways  411  that extend therethrough and that can provide fluid communication between the ambient environment and the internal volume defined by the shell  401 . In some examples, the apertures  411  can be substantially similar to apertures  210  described herein. The rear panel  405  can further define an engagement or mating slot  406  that can be sized to receive and engage with or mate with a periphery of the interface panel  442 . Accordingly, the shell  401  and the interface panel  442  and bottom panel  444  of the frame  440  can cooperate to define the exterior surface and internal volume of the electronic device  400 . 
     In some examples, the shell  401  can further include a mesh or perforated component  409  that can be coupled to or disposed substantially adjacent to the surface of the rear panel  405  that at least partially defines the internal volume. In some examples, the mesh can substantially cover the apertures  411  such that any fluid, such as air, that passes through the apertures  411  must also pass through the mesh  409 . The mesh  409  can include apertures or perforations of substantially any size, shape, or distribution. As can be seen, in some examples, the front panel  404  and the rear panel  405  of the shell  401  can be connected or coupled to side panels  407  that together, with the top panel  402 , form the integrally removable shell  401 . Further details of the electronic device  400  and shell  401  are provided below with reference to  FIG.  6   . 
       FIG.  6 A  illustrates a close-up view of a portion of the electronic device  400 , including a top surface of the housing  401 . In some examples, the housing  401  can be substantially similar to the housing  201  and can include some or all of the features described with respect to  FIGS.  2  and  3   , and can define apertures  450  and can include a mesh plate  470 , similar to mesh plates  408 ,  409  described herein. 
     In some examples, the housing or shell  401  can include an input component  465  disposed on an exterior surface thereof that is operable by a user to at least partially control the power state of the electronic device  400 . The housing  401  can also include one or more ports  463  disposed at a location on the housing  401  that is convenient for a user to quickly and readily access. In some examples, the ports  463  can include Universal Serial Bus-type ports, and Thunderbolt ports. The electronic device  400  can also include one or more visual indicators  461  integrated into and positioned on the housing  401  at a location that is readily visible by a user. In some examples, the visual indicator  461  can be illuminated and provide an activity indication to a user, e.g., under software control of a processing unit in the electronic device  400 . 
     As shown in  FIG.  6 B  and as described further herein, in some examples, the housing  401  of the electronic device  400  can define one or more recesses or cavities  467  in a surface thereof configured to receive one or more antenna components  466 , also referred to as antenna assemblies  466 . For example, a top surface of the shell  401  can include one or more cavities  467  and can include an antenna assembly  466  disposed in each cavity  467  and connected to one or more other components of the electronic device  400 . In some examples, the antenna assembly  446  can be disposed under a handle  452  of the electronic device  400 . In some examples, multiple antenna assemblies  466  can be disposed in a cavity  467 , for example two, three, four, or more antenna assemblies  466  can be disposed in each cavity  467  of the shell  401 . In some examples, the antenna assemblies  466  can be disposed substantially adjacent to one another in the cavity  467 , for example, with a first antenna assembly disposed in a first half of the cavity  467  and a second antenna assembly disposed in a second half of the cavity  467 . In some examples where the antenna assembly  466  includes two antennas, the antennas can be oriented in line with respect to one another in the cavity  467  such that the fields generated by the antennas are perpendicular and the adjacent antennas do not receive each other&#39;s signals. In these examples, the cavity  467  can eliminate a physical wall or divider between the portions or halves of the cavity housing each antenna. In some examples, the antenna assembly  466  can include a Wi-Fi antenna, a Bluetooth antenna, a cellular antenna, or combinations or multiples thereof. In some examples, a cavity  467  can include an antenna assembly  466  including two or more different types of antennas, such as a Bluetooth antenna and a Wi-Fi antenna. In some examples, the cavity  467  can have a shape that can create a resonant mode for one or more of the antennas of the antenna assembly  466 . 
     The housing  401  of the electronic device  400  can also include a locking mechanism  454 . In some examples, the locking mechanism  454  takes the form of a handle, for example, a semicircular handle, although the locking mechanism  454  can be substantially any shape or size. In some examples, the locking mechanism  454  can be a bi-stable locking mechanism that includes a first stable position and a second, different stable position. In some examples, the first stable position, as shown in  FIGS.  7 A-B , can be a position where the handle is disposed approximately horizontally, or level with the top surface of the housing  401 . Thus, in some examples, the housing  401  can include a recess sized to receive the locking mechanism  454 , such that the locking mechanism  454  is disposed below a level of the top surface of the housing  401 . 
     Further, the first stable position of the locking mechanism  454  can lock the shell  401  to the frame  440 , as described herein. Thus, in some examples, the first stable position of the locking mechanism  454 , for example, as illustrated in  FIGS.  6 A and  6 B , can indicate to a user that the locking mechanism is in a locked position and that the shell  401  is secured to the frame  440 , as described herein. Further details of the locking mechanism are described below with respect to  FIGS.  7 A-B . 
       FIG.  7 A  illustrates the locking mechanism  454 , for example, including a handle  455 , in a second of two bi-stable positions. In this second bi-stable position, the handle  455  is positioned vertically, or perpendicularly and protruding from the top surface of the shell  401 . In some examples, a user can physically move the handle  455  from the first bi-stable position to the second bi-stable position illustrated in  FIG.  7 A . In some examples, the handle  455  of the locking mechanism  454  can be positioned substantially perpendicular to one or more other handles  452  of the housing  401 . Although the handle  455  is illustrated in a second, raised position, the locking mechanism  454  can still be in a locked state. While the locking mechanism can still be in a locked state in the configuration illustrated in  FIG.  7 A , in this second bi-stable position, the locking mechanism can be rotatable, for example, by a user, to unlock the shell  401  from the frame  440 , as described herein. Further, while not a desired use, the handle  455  can be capable of supporting the entire weight of the electronic device  400  when in the second bi-stable position, but still in a locked state. 
       FIG.  7 B  illustrates the locking mechanism  454  after having been rotated to achieve an unlocked state, wherein the shell  401  is unlocked from the frame  440  and free to be removed by a user, for example, via the handle  455  of the locking mechanism  454 . Thus, in some examples, when the locking mechanism  454  is in an unlocked state, the handle  455  can be positioned substantially parallel to one or more other handles  452  of the housing  401 . Further, the position of the handle  455  can provide an indication to a user of the locked or unlocked status of the locking mechanism  454 . In some examples, as described herein, twisting or rotating the locking mechanism  454  between the locked and unlocked positions can also move the shell  401  relative to the frame  440 . For example, when a user rotates the locking mechanism  454  from a locked to an unlocked position, in addition to unlocking the shell  401  from the frame  440 , the shell  401  can be moved vertically relative to the frame  440  to break a seal or otherwise initiate removal therefrom. In some examples, this initial movement of the shell  401  driven by rotating the locking mechanism can serve to overcome any initial static friction between the shell  401  and the frame  440  and/or other components of the electronic device  400 , thereby allowing for easier removal of the shell  401  from the frame  440 . Additional features of the locking mechanism  454  and the electronic device  400  will now be described with reference to  FIGS.  8 A-B . 
       FIG.  8 A  illustrates an exploded view of the top portion of the electronic device  400 , including the locking mechanism  454 , the top surface  402  of the shell  401 , a portion of the frame  440 , and various other components. 
     As described above with respect to  FIGS.  7 A-B , the locking mechanism  454  can include a handle  455  that can be bi-stable in two positions, for example, a raised position and a lowered position. In some examples, the locking mechanism  454  can include a plunger  457  that is attached to the handle  455  and that can be driven by a spring  458 , for example, a coil spring, into either of the two bi-stable positions. In some examples, the handle  455  can be driven into the bi-stable position which is closest to its physical orientation. For example, if a user moves the handle  455  to a partially raised position that is substantially near to vertical and releases the handle  455 , the spring  458  can drive the plunger  457  to move the handle  455  into the second, raised bi-stable position without further input from the user. 
     In some examples, the locking mechanism  454  can engage with a retention component  444  that is secured to the frame  440 . The interplay between the locking mechanism  454  and the retention component  444  can serve to retain the shell  401  on the frame  440  or to allow the shell  401  to be removed therefrom. In some examples, the locking mechanism  454  can include one or more protruding articles, for example, pins  456  that can extend outwardly from the locking mechanism  454  to engage with a feature of the retention component  444 . For example, the retention component  444  can include a slot, a recess, or a protrusion 445 sized to receive and engage with a pin  456 . The pin  456  can be connected to the rotatable portion of the locking mechanism  454 , for example, the handle  455 , such that rotation of the handle  455  also results in rotation of the pins  456  relative to the retention component  444 . When a desired amount of rotation is achieved, for example, about 90°, the pin  456  can no longer be positioned in the slot  445  and can thus be free to be vertically lifted and separated from the retention component  444 , thereby allowing the shell  401  to be removed from the frame  440 , as described. 
     Further, in some examples, the slot  445  can be angled or ramped such that rotation of the pin  456  relative to the slot  445  causes the slot to exert an upwards force on the pin  456  to lift the shell  401  away from the frame  440 , for example, by a distance of about 1 mm, about 2 mm, about 3 mm, or about 5 mm or more. In some examples, the slot  445  can include a first slot end and a second slot end, positioned higher than the first slot end, such that rotating the handle  455  in the second bi-stable position moves the pin  456  from the first slot end to the second slot end such that the sleeve  401  moves a distance relative to the frame  440  corresponding to a difference in height between the first slot end and the second slot end, for example, about 3 mm. In some examples, the locking mechanism  454  can include three pins  456  and the retention component  444  can include three corresponding slots  445 . In some examples, the pins  456  can be evenly distributed around a periphery of the locking mechanism  454 . 
     In some examples, the electronic device  400  can include a sensor that can indicate to the electronic device  400 , for example, to a processor of the electronic device  400 , that the shell  401  is locked to the frame  440  and in a desired position, or that the shell  401  has been moved relative to the frame  440 . In some examples, certain features or systems of the electronic device  400  can be configured to function only when the sensor detects that the shell  401  and frame  440  are in a desired position with respect to one another. In some examples, the sensor can include a Hall Effect sensor affixed to the frame  440  and a magnet in a corresponding location of the housing  401  or locking mechanism  454 . Alternatively, the sensor can be affixed to the shell  401  and a magnet disposed at a corresponding location on the frame  440 . 
     As described herein, the housing  401  of the electronic device  400  can include an input component  465  affixed thereto. In some examples, the top surface  402  of the shell  401  can include an aperture  403  sized to receive a portion of the input component  465  such that a user can access or touch the input component through the aperture  403 . In some examples, a portion of the input component  465  can protrude at least partially through the aperture  403 , although in some other examples the portion of the input component  465  disposed in the aperture can be substantially level with the top surface  402  of the housing  401 . The input component  465  can also include a body and one or more electrical contacts affixed thereto. In some examples, the electrical contacts of the input component  465  can engage with a corresponding electrical contact affixed to the frame  440  such that an input detected by the input component  465  at least partially determines whether the power supply unit provides power to one or more electronic components of the electronic device  400 . The position of the input component  465  and its fixture to the shell  401  allows the input component  465  to be removed from the frame  440  when the shell  401  is removed from the frame  440 . Accordingly, this removal of the input component  465  from the frame  440  can prevent a user from turning on the electronic device  400  when the shell  401  is not secured to the frame  440  in a desired position. 
     As shown in  FIGS.  8 A and  8 B , the electronic device  400  can also include a cavity or recess  467  that is sized to receive and house an antenna assembly  466  as described herein. While in some examples, the cavity  467  can be part of, or can be affixed to the shell  401 , in some other examples the cavity or recess  467  can be a part of, or can be affixed to the frame  440 . In some examples, the cavity or recess  467  can have substantially any depth as desired. In some examples, the cavity can have a depth of about 9 mm, or about 10 mm. 
     An antenna component or antenna assembly  466  can be disposed in the cavity as described herein. In some examples, the antenna component  466  can include a dual-band antenna that can transmit and receive signals with a frequency of about 2.4 Ghz and about 5 Ghz. The antenna component  466  can also include a printed circuit board and/or a processor disposed thereon. In some examples, the antenna component  466  can include multiple antennas, for example, a first antenna and a second antenna. In some examples, the antennas can be disposed substantially adjacent to one another in the cavity  467 , for example, with a first antenna disposed in a first half of the cavity  467  and a second antenna disposed in a second half of the cavity  467 . In some examples where the antenna assembly  466  includes two antennas, the antennas can be oriented in line with respect to one another in the cavity  467  such that the fields generated by the antennas are perpendicular and the adjacent antennas do not receive each other&#39;s signals. In these examples, the cavity may not have or need a physical wall or divider between the portions or halves of the cavity housing each antenna. In some examples, the antennas can be Wi-Fi antennas, Bluetooth antennas, and cellular antennas. In some examples, the cavity  467  can have a shape that can create a resonant mode for one or more of the antennas of the antenna assembly  466 . 
     The electronic device  400  can also include an insert or cover  468  that can overlie the cavity  467  and antenna assembly  466 . In some examples, the insert  468  can be integrated or affixed to the shell  401 , for example, the top surface  402 . The insert  468  can extend substantially an entire length and width of the cavity  467 , and can be a shape corresponding to the shape of the cavity. In some examples, however, the insert  468  can be larger than the length and/or width of the cavity  467 . The insert  468  can include one or more apertures to allow signals to be received or transmitted by the antenna component  466  to pass therethrough. Further, the insert  468  can include a dust or tamper seal around the perimeter in order to protect the antenna component  466 . In some examples, the seal can include a material transparent to electromagnetic radiation having a frequency of greater than 2.4 GHz, and can be positioned in the cavity  467  or at an edge thereof. 
     In some examples, the insert  468  can define a first central slot  471  aligned with the length of the cavity  467  and positioned approximately at a midpoint of the width in the first half of the cavity. The first central slot  471  can be configured to allow electromagnetic radiation with a frequency of about 5 GHz to pass therethrough. The insert  468  can also define a second central slot  472  aligned with the length of the cavity and positioned approximately at a midpoint of the width in the second half of the cavity. The second central slot  472  can also be configured to allow electromagnetic radiation with a frequency of about 5 GHz to pass therethrough. The insert  468  can define a first pair of edge slots  473  aligned with the first central slot  471  and positioned along a perimeter of the insert  468  in the first half of the cavity  467 , the first pair of edge slots  473  configured to allow electromagnetic radiation with a frequency of about 2.4 GHz to pass therethrough, and a second pair of edge slots  474  aligned with the second central slot  472  and positioned along the perimeter of the insert  468  in the second half of the cavity  467 , the second pair of edge slots  474  configured to allow electromagnetic radiation with a frequency of about 2.4 GHz to pass therethrough. In some examples, the seal can occlude all of the slots of the insert  468 . 
     Further, as illustrated in  FIG.  8 A , the electronic device  400  can include a second cavity with a second antenna assembly disposed therein and a second insert overlying the second cavity and antenna assembly. In some examples, the second antenna assembly can be substantially similar to the first antenna assembly  466 . In some other examples, however, the second antenna assembly can include one or more antennas not present in the antenna assembly  466 . For example, the antenna assembly  466  can include two dual band Wi-Fi antennas and the second antenna assembly can include one dual band Wi-Fi antenna and one Bluetooth antenna. Additional details of the housing, including the apertures or perforations defined by the shell and associated components are described with reference to  FIGS.  9 A and  9 B . 
     As discussed with respect to  FIGS.  9 A and  9 B , the shell  501  of an electronic device can define a number of apertures or perforations  502  that extend through the shell  501  and can provide fluid communication between the ambient environment and the internal volume defined by the housing  501 . In some examples, the shell  501  can be substantially similar to and can include some or all of the features of shells  201  and  401  described herein, and the apertures  502  can be substantially similar to the apertures  210 ,  211 ,  410 , and  411  described herein. 
     As discussed above, the apertures  502  can be defined by a three-dimensional structure of the housing  501  that includes spherical recesses having a base pattern of three spherical recesses disposed in a common plane and at least partially intersecting or interfering with one another, and a fourth spherical recess on an adjacent plane that intersects or interferes with each of the three spherical recesses to form the aperture  502 . Referring now to  FIG.  9   , which illustrates a front view of an exterior surface of the shell  501 , one or more first cavities or recesses  554  can extend into the shell  501  from the exterior surface. The first cavities  554  can have substantially the same size and shape as one another, although in some embodiments the first cavities  554  can vary in size and shape from one another. The first cavities  554  can have a substantially spherical or hemispherical shape, such that the negative space of a cavity  554  can have a shape of a portion or region of a sphere. In some other embodiments, however, the first cavities  554  can have any shape. As can be seen, the first cavities  554  can be arranged in a pattern, for example, a regular or repeating pattern of first cavities  554 . In some embodiments, the pattern can include a close-packed pattern of substantially spherical first cavities  554 , for example, a hexagonal close-packed pattern of substantially spherical first cavities  554 . As used herein, a hexagonal close-packed pattern is intended to be understood as a structure that substantially corresponds to a layer of spheres or portions of spheres packed so that spheres or portions of spheres in alternating layers overlie one another, aligned in the gaps of the preceding layers. As described above, the present system can not only overlie one another, but can interfere or overlap the adjacent spheres. A traditional packing factor for hexagonal close packed systems is typically 0.74, though it can be higher in the present system due to the overlapping or interference pattern created. According to one example, the close packed pattern is established by repeating and propagating a base pattern throughout the structure, in various patterns or geometric arrangements, to form the aggregate three-dimensional structure. 
     An electronic device including the shell  501  can further include a component, for example, a perforated or mesh component or plate  510 , disposed substantially adjacent to a surface of the shell  501  that at least partially defines the internal volume of the device. In some examples, the mesh component or plate  510  can be in direct contact with a surface of the shell  501 , however, in some other examples, the mesh component  510  can be spaced apart from a surface of the shell  501 , for example, by a distance of up to about 1 mm, up to about 3 mm, up to about 5 mm, or up to about 10 mm, or even more. The mesh component  510  can define a number of perforations or apertures  511  that extend therethrough and that can be arranged in a repeating pattern. In some examples, an aperture  511  can have a diameter of about 1 mm, about 2 mm, about 3 mm, or even larger. For example, the apertures  511  can be arranged in a hexagonal close-packed pattern with a desired separation distance between adjacent apertures  511  that can be less than about 1 mm, less than about 0.75 mm, less than about 0.5 mm, less than about 0.25 mm, or less than about 0.1 mm or lower. The apertures  511  are illustrated as being substantially circular and having a substantially identical shape to one another, however, the apertures can be substantially any size or shape as desired and may not all have the same size or shape. 
     As described herein, in some examples, the shell  501  and the mesh plate  510  can allow fluid communication between the ambient environment and the internal volume defined by the shell  501  to allow a desired level of airflow into or out of the internal volume, while also acting as an electromagnetic interference (EMI) and/or electromagnetic compatibility (EMC) noise shield for other components of the electronic device. For example, as described further herein, an air-moving system of the electronic device can move air into or out of the internal volume through the apertures  502 ,  511  of the shell  501  and the mesh plate  510 . In some examples, the speed and volume of air moving into or out of the internal volume can be controlled by the air-moving system so that the air movement does not produce noise that is audible to the user. 
     In some examples, the exterior surface of the shell  501  and a surface of the mesh plate  510  can at least partially define an exterior surface of the electronic component. In some examples, a repeating pattern of apertures  502  of the shell  501  and the repeating pattern of apertures  511  of the mesh plate  510  can combine to define an open area into the internal volume of at least about 70%, at least about 73%, at least about 75%, or at least about 77% or higher. In some examples, the open area defined by the shell  501  and the mesh plate  510  can be less than about 95%, less than about 90%, less than about 85%, or less than about 80%, or lower. As used herein, the term open area can refer to a percentage of the total area of a surface at least partially defined by a component where a particle, fluid, or other essentially dimensionless object incident on that portion of the surface has a path from the side on which it is incident through the component. Further, the surface can be defined by the outermost surface of the component and, in some examples, does not include the surface area of features such as apertures, recesses, or holes that extend into the component&#39;s surface. Thus, for example, in the example of the component shown in  FIG.  9 A , the surface used to define the open area is a continuous planar surface defined by the top surface  552  of the component that extends the height and width of the component and further extends straight across any apertures  502  of the component. 
     This level of open area can allow a desired amount of air movement into or out of the internal volume as described. The shell  501  and the mesh component  510  can also, however, act as an EMI/EMC shield even with this high level of open area due, to the arrangement and size of the apertures formed therein. For example, the shell  501  and the mesh component  510  can reduce electromagnetic emissions therethrough by at least about 20 dBμV for frequencies between about 2 GHz and about 5 GHz. Further details of the shell  501  and mesh component  510  are described with respect to  FIG.  9 B . 
     As further illustrated in  FIG.  9 B , at least one first cavity  554  extending into the shell  501  from the exterior surface can intersect or interfere with at least one second cavity  556  extending into the shell  501  from an interior surface, to define an aperture  502 . In some examples, one or more first cavities  554  can intersect with one or more second cavities  556 . Further, one or more first cavities  554  can intersect with different numbers of second cavities  556 . For example, an amount of the first cavities  554  can each intersect with three second cavities  556  while an amount of different first cavities  554 , for example, those first cavities  554  positioned near a periphery of the shell  501 , can each intersect with two second cavities  556 . 
     Similarly, in some embodiments, one or more second cavities  556  can intersect with one or more first cavities  554 . Further, one or more second cavities  556  can intersect with different numbers of first cavities  554 . For example, a number of the second cavities  556  can each intersect with three first cavities  554  while other second cavities  556 , for example, those second cavities  556  positioned near a periphery of shell  501 , can each intersect with two first cavities  554 . 
     Together, the intersecting first cavities  554  and second cavities  556  form or define the three-dimensional pattern of apertures  502  extending through the shell  501 . In some examples, at least some of the apertures  502  of the three-dimensional pattern can be in fluid communication with one another to form or define a matrix of continuous passageways in the shell  501 . In some examples, this matrix of passageways can extend substantially throughout the entire shell  501 , or an entire face or panel of the shell  501 , or merely a portion of a face or panel of the shell  501 , such that any one cavity can be in fluid communication with any other cavity via the passageways. Additionally, the three-dimensional pattern of apertures  502  maintains a structural lattice of the material forming the shell  501  or a panel thereof. This resultant lattice structure provides thermal benefits in that there is an increased surface area for the transmission and release of thermal energy via convection as compared to traditional patterns, while providing passageways for convective transfer of thermal energy. Additionally, the interconnected lattice structure provides structural support for the shell  501 . 
     As described above, an electronic device can also include a mesh component or plate  510  that defines a pattern of apertures  511  extending therethrough. In some examples, the mesh plate  510  can have a thickness of about 1 mm, about 2 mm, about 3 mm, about 5 mm, or even greater. Although illustrated as being spaced apart from the shell  501 , in some examples, the mesh plate  510  can be disposed substantially adjacent to an interior surface of the shell  501 . In some examples, the mesh plate  510  can be bonded or adhered to the shell  501 , for example, by brazing, welding, and/or adhesives. In some examples, the mesh plate  510  can be bonded or adhered to the shell  501  by a pressure sensitive adhesive disposed on portions of the mesh plate  510  between the apertures  511  and contacting the shell  501  at a position between the apertures  502 . In some examples, the mesh plate  510  can be electrically grounded along all or a portion of the perimeter of the mesh plate  510 . Further, in some examples, the mesh plate  510  can be electrically connected to the shell  501  along all or a portion of the perimeter of the mesh plate  510  to electrically ground the mesh plate  510 . Further details of the structure of the housing  501  forming the apertures or through holes  502  are described with respect to  FIGS.  10 A- 10 F . 
       FIG.  10 A  is a perspective view of one example pattern that can be defined by the housing  501 . In some examples, a portion of the housing  501  can have a structure or unitary body  550  that can define one or more apertures  502 . As shown, a plurality of top spherical recesses  554  can be formed in the top surface  552  of the unitary body  550 . The unitary body  550  can include a three-dimensional structure defined by a number of top spherical recesses  554  that extend from the top surface  552  and engage and interfere with a number of bottom spherical recesses  556  formed in the bottom surface ( FIG.  10 C ). The top spherical recesses  554  and the bottom spherical recesses  556  can interfere with each other to create through holes arranged in specified patterns.  FIGS.  10 B through  10 E  show the three-dimensional pattern of the unitary body  550  in various orientations. 
       FIG.  10 B  is a top view of the example three-dimensional pattern formed in the unitary body  550 . As shown, the top spherical recesses  554  formed in the top surface  552  of the unitary body  550  extend through and create through holes due to their engagement and interference with the bottom spherical recesses  556 . The front, rear, and cross-sectional views shown in  FIGS.  10 C,  10 D, and  10 E , respectively, illustrate the through holes created by the engagement of the top spherical recesses  554  and the bottom spherical recesses  556 . According to one example, the use of spherical recesses increases the exposed surface area of the three-dimensional pattern, enhancing the thermal transfer capabilities via convection. The three-dimensional pattern shown in  FIGS.  10 A- 10 E  can be a pattern aggregation of a base pattern of orifices or recesses formed in the unitary body  550 . One example base orifice pattern is shown in  FIG.  10 F  and described in further detail below. 
     As mentioned above, the spherical recesses can have a base pattern of three spherical recesses disposed in a common plane and at least partially intersecting or interfering with one another, and a fourth spherical recess on an adjacent plane that intersects or interferes with each of the three spherical recesses.  FIG.  10 F  graphically illustrates one example of a base pattern  560  of the spherical recesses. The base pattern  560  can include a first spherical recess  562 , a second spherical recess  564 , and a third spherical recess  566  arranged in a first plane and at least partially intersecting one another, as shown by the intersection line  570 . The areas of intersection of the cavities result in through holes in the resulting unitary body containing the three-dimensional pattern. A fourth spherical recess  570  is disposed in a different plane relative to the first spherical recess  562 , the second spherical recess  564 , and the third spherical recess  566 . As illustrated, the fourth spherical recess  570  can intersect the first spherical recess  562 , the second spherical recess  564 , and the third spherical recess  566 , as shown by the intersection line  570 , thereby forming the through holes in the unitary body. According to one example the first spherical recess  562 , the second spherical recess  564 , and the third spherical recess  566  can be top spherical recesses originating at a top surface of a unitary body and the fourth spherical recess  568  can be a bottom spherical recess originating at a bottom surface of the unitary body, to form the three-dimensional pattern. This base form or pattern  560  can then be repeated and propagated throughout the structure, in various patterns or geometric arrangements, to form the aggregate three-dimensional structure. 
     In some examples, and as shown in  FIG.  11 A , the structure of the shell  501  can be formed from or include one or more portions or components that can be joined together to form the structure of the shell  501 . In some examples, the shell  501  can include an outer or exterior portion  503  that can at least partially define the exterior surface of the device  500  and can also at least partially define a number of apertures or perforations  502  that can extend into or entirely through the exterior portion  503 . As described herein, the exterior portion  503  can include a metallic material, polymeric material, ceramic material, or combinations thereof. In some examples, the exterior portion  503  can include a metallic material such as steel or aluminum. 
     The shell  501  can also include an interior portion or portions  504 ,  505  that can be bonded, adhered, fused with, or otherwise joined to the exterior portion  503 . For example, an interior portion  504  can be fused to a surface of the exterior portion  503  opposite the exterior surface of the shell  501 . In some examples, the interior portion  504  can be joined or fused to substantially all of an inner surface of the exterior portion  503 . Further, in some examples, the interior portion  504  can include multiple parts or portions that may or may not be connected or otherwise joined to one another, such as portions  504  and  505 . In some examples, an interior portion  504 ,  505  can be joined directly to the exterior portion  503 , however, in some examples, the interior portion or portions  504 ,  505  can be joined to the exterior portion  503  by an additional layer or material, such as an adhesive. In some examples, such as when the exterior portion  503  includes a metallic material, an interior portion  504  can be cast or molded, for example by injection molding, onto the exterior portion  503 . Thus, in some examples, the interior portion or portions  504 ,  505  can include a flowable material that can be cooled or cured to form the interior portion or portions  504 ,  505 . 
     In some examples, the interior portion  504  can further define the apertures or perforations  502  that are at least partially defined by the exterior portion  503 . Thus, in some examples, an aperture can be partially defined by the exterior portion  503  and can extend into the shell  501 , and be further defined by the interior portion  504 . In some examples, the structures described with respect to  FIGS.  10 A- 10 F  can be formed from, or can be defined by, a combination of the exterior portion  503  and the interior portion  504 . In some examples, the interior portion  504  can include a metallic material, a polymeric material, a ceramic material, coated materials, and/or combinations thereof. In some examples, the interior portion  504  can include one or more polymeric materials. For example, at least some of the interior portion  504 , such as the section of interior portion  504  that at least partially defines the apertures  502 , can be formed from a first polymeric material, while other sections, such as the sections joined to the sidewalls of the exterior portion  503 , can be formed of a second polymeric material. The second polymeric material can, for example, be lighter, lower density, less expensive, or have superior thermal and/or sonic insulating properties than the first polymeric material. 
     As shown in  FIG.  11 B , in some examples, a mesh component or plate  510  can be disposed substantially adjacent to a surface of the shell  501 , for example, a surface at least partially defined by the interior portion  504  that at least partially defines the internal volume of the device  500 . Thus the interior portion  504  can act to maintain a desired distance between the exterior portion  503  and the mesh component  510 , for example, to provide a desired level of EMI or EMC noise shielding. In some examples, the interior portion  504  can have any desired thickness or thicknesses, such as up to about 1 mm, up to about 3 mm, or up to about 10 mm, or even more. 
       FIGS.  11 C and  11 D  illustrate perspective views of a section of the shell  501 , for example, a front section of the shell  501 . In some examples, the shell  501  can be assembled from or can include multiple sections or panels that can be joined together or to other components. The sections of panels of the shell  501  can be joined by any means known in the art or developed in the future, for example with adhesives, welding, and/or attachment hardware such as screws or bolts. As can be seen, in some examples, a section of the shell  501  can include an exterior portion  503  and an interior portion  504  bonded thereto, as described herein. The exterior portion  503  and the interior portion  504  can both at least partially define an aperture  502  through the shell  501  and can combine to form the structures described herein with respect to  FIGS.  10 A- 10 F . Further details regarding an electronic device including a shell, a frame, and various additional components are described with respect to  FIGS.  12 - 16    below. 
       FIG.  12    illustrates a perspective view of the interior of an electronic device  600 . The electronic device  600  is merely one representative example of a device that can be used in conjunction with the systems and concepts disclosed herein. The electronic device  600  can be, for example, a desktop computer and can be substantially similar to, and include any of the features of the electronic devices  100 ,  200 , and  400  described herein. The electronic device  600  can include a housing, such as the housings  201 ,  401 ,  501 , described herein, that can define an internal volume and at least partially define an exterior surface of the electronic device  600 . In the present example, the shell, which can be similar to shells  201 ,  401  described herein, is not shown. 
     The electronic device  600  can include a frame or chassis  640  that can connect to and at least partially support the shell when it is secured to the electronic device  600 . The chassis  640  can also define a lower or bottom exterior surface of the device  600 . Together, the housing and the chassis  640  can substantially define the exterior surface of the device  600 . The chassis  640  can further provide structural support to the electronic device  600 . The components of the electronic device  600  can be affixed to the housing and/or the chassis  640  via internal surfaces, attachment features, threaded connectors, studs, posts, and other fastening systems, that are formed into, extending into the body from, or otherwise part of the housing and/or the chassis  440 . 
     In the present example, the main logic board  630  can divide and separate the internal volume into a plurality of zones, such as a first zone and a second zone.  FIG.  12    provides a view of the first zone of the internal volume of the electronic device  600 . In this example, the main logic board  630  is sized and positioned within the internal volume defined by the housing such that the main logic board  630  extends substantially an entire height and width of the internal volume, thereby dividing the internal volume into a first zone located on one side of the main logic board  630 , and a second zone located on the other, opposite side of the main logic board  630 . 
     A number of electronic, electrical, and other components of the electronic device  600  can be disposed within the first zone and can be connected to a first surface or side of the main logic board  630 . In this example, a CPU  612 , one or more graphics processing units (GPUs) such as GPUs  614  and  616 , a power supply unit  618 , and a first air-moving apparatus  620 , are connected to the first side of the main logic board  630 . In some examples, one or more of the components can be directly connected to the main logic board  630 , for example, by soldering or by interfacing with one or more ports, such as PCIe ports on the main logic board  630 . The electronic device  600  can include additional electronic components that are connected to the main logic board  630 , for example, by ports disposed on the main logic board  630 . In some examples, the ports can include one or more ports to connect components such as expansion cards to the electronic device  600  through an expansion bus. Accordingly, in some examples, the main logic board  630  can include one or more computer expansion bus interconnects, for example, serial computer expansion bus interconnects such as PCIe slots. The interconnects can allow a user to add additional components, such as components  611  and  613  to the electronic device  600 , to allow for additional functionality, as desired. 
     Further, the configuration of the components within both the internal volume and the first zone, as well as the location of the expansion slots on the main logic board  630 , allow for a high level of access to the components when the housing is removed from the electronic device  600 , as shown. Thus, a user or a technician can easily add, remove, or replace the components of the electronic device  600  when the housing has been removed. 
     As described with respect to electronic device  200 , the electronic device  600  can include a first air-moving apparatus  620  that can include one or more air-moving components, such as fans. In the present example, the air-moving system can move air from the ambient environment into the first zone through, for example, holes in the housing, to create a positive air pressure in the first zone relative to the ambient environment. The first air-moving apparatus  620  can include a first fan  622 , a second fan  624 , and a third fan  626 . The fans  622 ,  624 ,  626  can be affixed together to a component that is secured to, for example, the chassis  640 . The first air-moving apparatus  620  can, according to one example, extend substantially an entire height of the electronic device  600 , effectively moving a wall of air into the first zone and past the components located therein. In some examples, the speed of each fan  622 ,  624 ,  626  can be independently controlled, such as by a processor of the electronic device  600 , to create a desired location and amount of airflow into the first volume. In some examples, a fan blade diameter of the fans  622 ,  624 ,  626  can be about 140 mm. 
     The arrangement of the first air-moving apparatus  620  with respect to the components and expansion slots in the first zone allows for the addition or removal of various components from the electronic device  600  without substantially impacting the airflow pathways through the electronic device  600 . Whereas the addition of components to a traditionally configured computer can result in airflow blockages and dead spots, the use of zones and a first air-moving apparatus  620  that extends substantially the entire height of the first zone allows for airflow to be provided to the components without regard to whether additional components have been added or removed, thereby achieving a desired level of airflow and heat removal that is compatible with a highly modular and customizable design. As described with respect to electronic device  200 , in some examples, the electronic device  600  can include support features, such as feet  621  that are affixed or connected to the frame  640 . Additional details of the frame and support features of electronic device  600  are provided below with reference to  FIGS.  13 A-C . 
       FIG.  13 A  illustrates an exploded cross-sectional view of the portion of the frame  640  indicated in  FIG.  12   , for example, a portion adjacent to one of the support features  621 . As can be seen, in some examples, various components can be positioned or contained within a hollow space defined by the tubular member of the frame  640 . As shown, the hollow tubular portion of the frame  640  can define a port or aperture  641  that allows for access into the internal space defined by the tubular member of the frame  640 . 
     This aperture  641  can allow a user or technician to access the one or more components that can be contained therein. Additionally, in order to provide a pleasing cosmetic appearance and to limit the accessibility of the remainder of the hollow space defined by the tubular member of the frame  640 , a trim ring  672  can be contained with the hollow space and can be disposed substantially adjacent to the aperture  641  such that an aperture of the trim ring  672  substantially abuts the aperture  641 . In some examples, the trim ring  672  can be held in place within the frame  640  by a wedge  674  that is configured to receive a nut  676  and a screw  678  which can retain the wedge  674  and the trim ring  672  in a desired location. Thus, when a user or technician seeks to access the interior of the frame  640  through the aperture  641 , the trim ring  672  can define which portions of the frame  640  are accessible and block access to certain other undesired locations within the frame  640 . 
     Turning now to  FIGS.  13 B and  13 C , a user can seek to access the interior of the frame  640  through the trim ring  672  in order to manipulate a captive attachment member  686  that can be stored therein. In some examples, the attachment member  686  can be a screw or bolt, although any form of attachment member can be used, as desired. The attachment member  686  can be retained in the frame  640  by a retention member  684  that can engage with a corresponding feature on the interior of the frame  640 , for example, the threads  680  of  FIG.  13 A . The retention member  684  can hold the attachment member  686  in a desired position until such time as it is manipulated by a user or technician, for example, by inserting a screw driver or other tool into the aperture  641  through the trim member  672  to engage with the attachment member  686 . During use, the tool can drive the attachment member  686  to displace it towards, for example, the bottom portion of the frame  640 . In this way, the attachment member  686  can thus be moved to protrude from the frame  640  whereupon it can engage with a corresponding engagement feature of a component, such as a support feature  621 , for example, a foot or caster, disposed adjacent to the frame  640 . In some examples, the support feature  621  can include a threaded portion  682  corresponding to threads of the attachment member  686  and the engagement between the attachment member  686  and the support feature  621  can affix the support feature to the frame  640 . In examples where a user or technician may seek to remove or replace the support feature  621 , the retention member  684  can retain the attachment member  686  at least partially within the frame  640  in order to ease future alignment and attachment of a support feature. Further features of electronic device  600  and related components are described with respect to  FIG.  14   . 
       FIG.  14    illustrates a perspective view of the interior of an electronic device  600 . Whereas  FIG.  12    depicts the right side of the electronic device  600  including the first zone,  FIG.  14    shows the left side of the electronic device  600  including the second zone. In some examples, a component, such as the main logic board  630 , can divide the internal volume into a plurality of zones. While the components described above with respect to  FIG.  12    are connected to one side or surface of the main logic board  630 , the electronic device  600  can include components disposed in the second zone and connected to a second, different side of the main logic board  630 . In some examples, the electronic device  600  can include one or more memory modules  632 ,  636 , such as, dual inline memory modules (DIMMs). The memory modules  632 ,  636  can be positioned and electrically connected to the main logic board  630 . Each DIMM can also have a cover  633 ,  637  associated therewith, as described further herein. The electronic device  600  can also include data storage, for example, in the form of a drive such as solid-state drive (SSD)  638 . The SSD  638  can be disposed in the second zone and can also be positioned on the main logic board  630 . The SSD  638  can be electrically connected to one or more other components of the electronic device  600 . 
     The air-moving system of the electronic device  600  can further include a second air-moving apparatus  628  positioned within the second zone. In the present example, the second air-moving apparatus  628  can include a blower  628  to move air from the second zone to the ambient environment through the housing, for example, through holes formed in the housing. In this way, the second air-moving apparatus  628  can produce a negative air pressure in the second zone relative to the ambient environment. Creation of the negative air pressure in the second zone causes a flow of air across the components in the second zone. Although the second air-moving apparatus  628  is described as a blower, in some examples, any suitable component capable of moving air or producing airflow can be included in the first air-moving apparatus  620 . As used herein, the term blower can refer to a centrifugal fan that can include, for example, an impeller and a ducted housing to direct air moved by the impeller. 
     The electronic device  600  can include an interface panel  642  that can be substantially similar to the interface panel  220  described with respect to  FIG.  3   . The interface panel  642  can also include various ports that can be used to communicate data and/or power between the electronic device  600  and various external systems. For example, the interface panel  642  can include an alternating current (AC) power input port  619 , which can be sized and shaped to accept a power plug suitable for transferring external power to the power supply unit  618  of the electronic device  600 . The interface panel  642  can also include one or more holes, apertures, or perforations that allow air to be moved through the interface panel  642 . For example, the interface panel can be located at an edge of a zone, such as the first zone, and air can be moved from the first zone to the ambient environment through the interface panel  642 . In some examples, the interface panel  642  can include multiple faceplate portions  643 , each faceplate portion  643  defining a number of apertures or through holes. In some examples, a faceplate  643  can be sized to correspond to the dimensions of an associated component connected to an associated PCIe slot. For example, a faceplate  643  can have a height and width that are substantially similar to a height and width of a component such as component  613 . In some examples, the faceplate  643  can even be attached or affixed to the component  613 . Thus, in some examples, the electronic device  600  can include the same number of faceplates  643  as components connected to PCIe slots in the device  600 . The perforated faceplate  643  assists in providing EMC shielding for the components of the electronic device  600  while also allowing airflow to pass therethrough to assist with thermal management. Additionally, the apertures provide a low frontal surface area of the faceplates  643  which prevents significant amounts of thermal transfer to, for example, a user touching the faceplate  643 , even if the faceplate itself is at an elevated temperature. Further details regarding the electronic device  600  and the function of components such as the DIMM covers  633 ,  637  are described with reference to  FIG.  15   . 
       FIG.  15    illustrates electronic device  600  in a manner similar to  FIG.  14   , but including DIMM covers  633  and  637  moved to an open position, thereby exposing the associated DIMMs  632 ,  636 . In the closed position, for example, as shown in  FIG.  15   , a DIMM cover  633  can serve to separate airflow between a DIMM  632  and other components of the electronic device  600 , such as the SSD  638 , in order to control airflow and achieve a desired level of thermal management of the various components of the device  600 . Thus, a DIMM cover  633  can cover a portion of the DIMM  632  in the closed position, such as a top portion, while maintaining an opening on the side portions of the DIMM  632 , thereby defining an airflow channel or pathway under the DIMM cover  633  and over, for example, heatsink portions of the DIMM  632 . The size and shape of the DIMM cover  633  can be chosen as desired to achieve desired levels of airflow management. Additionally, the various apparatuses and components of the air-moving system can be controlled, for example, by a processor, to provide desired levels of airflow to the DIMMs  632 ,  636 , depending on a variety of variables, for example, a level of use by certain applications running on the electronic device  600 . 
     A DIMM cover  633  can be retained in a locked or closed position, for example, as shown in  FIG.  14   , by a locking mechanism. The locking mechanism can include a toggle or latch, for example, toggles or latches  670 ,  672  that can be manipulated by a user to unlock and open the corresponding DIMM covers  633 ,  637 . In some examples, the locking mechanism can include one or more springs that can force the cover  633 ,  637  into an open position when the toggle is manipulated by a user to an unlocked state. Further, the toggle can include a visible indicator that can provide a visible indicia of whether the toggle  670 , and thus the associated DIMM cover  633  is in a locked or an unlocked state. When a user seeks to close the DIMM cover  633 , the user can manipulate or move the cover  633  into the closed position, whereupon it can engage with the locking mechanism. This engagement with the locking mechanism can occur automatically when the cover  633  is moved to a closed position to automatically lock the cover  633 . The automatic engagement can also cause the toggle to move from the unlocked state to the locked state and can cause the visual indicator to display a correct associated visible indicia. In some examples, the visual indicator can include multiple colors, each color associated with a locked or unlocked state and being displayed when the toggle is in such a state. In some examples, the visual indicator can include an associated graphic or graphics, or a light, such as an LED light. Further details of the interior of electronic device  600  are described below with reference to  FIG.  16   . 
       FIG.  16    shows an exploded view of the electronic device  600  including the chassis  640 , the components disposed within the internal volume, and the air-moving system. As described herein, a component, in this example the main logic board  630  disposed within the internal volume, can serve to divide the internal volume into a plurality of zones. In the present example, the main logic board  630  spans two major dimensions of the internal volume defined by the housing, to thereby divide the internal volume into two zones. Further, the first zone and the second zone can be fluidically isolated from one another, except at one or more desired locations. 
     In some examples, the electronic device  600  can further include one or more seals that can prevent airflow at undesired locations, such as, for example, between zones defined by the main logic board  630 . When the housing is situated on the electronic device, the main logic board  630  and the housing together prevent airflow between zones by providing a physical barrier to airflow. Accordingly, it can be undesirable for unanticipated or unintentional gaps or spaces to exist where the housing and main logic board  630  meet because these gaps can allow undesired airflow and can inhibit the creation of a pressure differential between the zones, as described herein. In order to ensure that the zones are fluidically isolated from one another, except at desired locations, one or more sealing components can be used to create an air impermeable seal at desired locations between the housing and the main logic board  630 . In the present example, a seal or sealing component  652  can at least partially surround the main logic board  630 , and in some examples, can substantially surround an entire perimeter of the main logic board  630 . The seal  652  can include any compressible or compliant material as desired, such as, for example, a polymer material such as rubber that is capable of forming a substantially air impermeable seal between components of the electronic device  600 . When the housing is situated on the electronic device  600 , the alignment of the housing and a component, such as the main logic board  630 , can cooperate with the seal  652  to form a substantially air impermeable barrier. For example, the housing and the main logic board  630  can exert pressure on the seal  652 , and in some examples can compress the seal  652 , to create a substantially air impermeable barrier. 
     In some examples, the electronic device  600  can include one or more additional sealing components, for example, at any location in the device  600  where airflow is not desired. In some examples, a seal  654  can at least partially surround one or more other components of the electronic device  600 , such as the first air-moving apparatus  620 . In the present example, the seal  654  substantially surrounds the first air-moving apparatus  620  and cooperates with the housing to prevent airflow from the first zone back to the ambient environment at this location. In some examples, where the first zone has a positive air pressure, a seal such as the seal  652  can help prevent or inhibit backflow, i.e., airflow from the first zone into the ambient environment at undesired locations. 
     In some examples, the zones can be fluidically isolated by a main logic board  630  that is substantially impermeable to airflow, except at one or more desired locations. In this way, the main logic board  630  serves to selectively inhibit the movement of air between the first zone and the second zone except at the desired locations. Thus, in some examples, the component such as the main logic board  630  can include or be constructed from a material that is substantially impermeable to airflow. In order to control the airflow between zones, the main logic board  630  can include an aperture or through-hole  660  that can serve to fluidically connect the first zone and the second zone, and can allow air to predictably flow between the zones through the aperture  660 . As described further herein, in some examples, one zone can have a positive air pressure while another zone can have a negative air pressure. Accordingly, the relative pressure of each zone will drive air to flow from the positive air pressure zone to the negative air pressure zone, while the aperture  660  provides the path of least resistance for this flow to occur, thereby controlling the location of airflow between the zones. 
       FIG.  16    also shows the arrangement of the components, for example, components  611 ,  613 ,  614 ,  616 , and  618  in the first zone of the internal volume can maximize or increase the surface area of the components exposed to air being moved by the first air-moving apparatus  620 . In some examples, one or more of these components can include a heatsink, for example, in the form of a highly thermally conductive material that can transfer heat between the operational parts of the component and the passing air. The orientation of these components with respect to the airflow driven by, for example, the first air-moving apparatus  620 , as enabled by the dual-sided configuration of the main logic board  630 , can allow for the maximization of heatsink surface area that is exposed to flowing air, as compared to traditional computer and electronic device architectures. Additionally, each component  611 ,  613 ,  614 ,  616 , and/or  618  can be a modular component and can include its own processor and attachment feature or features that are configured to engage with a corresponding portion of the frame  640  to retain the modular component in a space defined by the frame sized to correspond to the modular component. A modular component can be secured to the frame  640  of the electronic device by a retention component, such as a clamp plate, that includes an aperture and affixes the component to the frame, for example, by an attachment member, such as a screw, that passes through the aperture of the clamp plate whereupon it can engage with the attachment features of the modular component and frame  640  to retain the modular component. Additional embodiments of the structure and arrangement of an electronic device including a housing defining an internal volume divided into one or more zones by a component or components within the internal volume are described below, with reference to  FIGS.  17 A-C . 
       FIGS.  17 A and  17 B  illustrate top and bottom perspective views of a grounding member or grounding component  701  of an electronic device  700 , for example, electronic devices  200 ,  400 ,  600  described herein, that can facilitate the electrical grounding of one or more components of the electronic device. In some examples, the component  701  can be formed from a metallic material, such as steel or aluminum, although substantially any conductive and flexible material can be used, such as conductive polymers. In some examples, the grounding component  701  can be formed from a single piece of metal, for example, it can be stamped from a single piece of sheet metal. 
     The grounding component  701  can include an elongated body including a first set of arms  710  extending from a first side of the body and folded thereover. The grounding component  701  can also include a second set of arms  711  extending from a second side of the body opposite the first side. The second set of arms  711  can also be folded over the body. The sets of arms  710 ,  711  can be offset from one another such that an arm  711  of the second set is positioned between two arms  710  of the first set when the first set of arms  710  and the second set of arms  711  are folded over the body. In this way, the sets of arms can act as leaf springs to provide a flexible electrical contact between a component and another portion of the electronic device. 
       FIG.  17 C  shows the grounding component  701  attached to a portion of a component  730 , for example, by an aperture  702  defined by the grounding component  701  and a hook  703  disposed opposite the aperture  702 . The grounding component  701  can be connected to a component  730  by mating the aperture  702  to a corresponding male attachment feature of the component  730  and by engaging the hook or lip  703  with an edge of the component  730 . Thus, the arms  710 ,  711  can directly contact the component  730  and form an electrical connection therewith, while the surface  720  of the grounding component  701  provides a large area for contacting the frame or some other portion of the electronic device to ground the component  730 . The spring force generated by the arms  710 ,  711  of the grounding component  701  ensures that electrical contact is maintained between the component  730  and an electrical ground, even if the component  730  is not perfectly aligned. Further, the arms  710 ,  711  of the grounding component  701  are arranged so that it is robust to shearing forces. The grounding component  701 , or multiple grounding components, can be used to connect any of the electronic device components described herein to an electrical ground, as desired. Additional embodiments of the structure and arrangement of an electronic device, including a housing defining an internal volume divided into one or more zones by a component or components within the internal volume are described below, with reference to  FIG.  18   . 
       FIG.  18    shows a perspective view of a component of an electronic device, such as, a main logic board  730 . In some examples, the electronic device can be substantially similar to and can include some or all of the features of the electronic devices  100 ,  200 ,  400 , and  600  described herein. Further, the main logic board  730  can be substantially similar to and can include some or all of the features of components  430  and  630  described herein. 
     In the present example, the main logic board  730  can be, for example, a printed circuit board including a polymeric substrate. In some examples, the main logic board  730  can include any substrate material as desired, for example, composite materials such as fiberglass material, polymer-based composite, metals, and combinations thereof. The main logic board  730  can include a first surface  732  and a second surface  734  disposed opposite the first surface  732 . In some examples, however, the main logic board  730  can have substantially any shape and amount or orientation of surfaces, as desired. 
     As shown, in some examples, one or more components of the air-moving system of the electronic device can be affixed or otherwise connected to the first surface  732  of the main logic board  730 . In some examples, the first air-moving apparatus  720 , including a first fan  722 , a second fan  724 , and a third fan  726  can be connected to the main logic board  730 . In this way, the main logic board  730  and the first air-moving apparatus  720  can cooperate to fluidically isolate the first zone from the second zone and the ambient environment. As described herein, other components of the electronic device can be directly connected to the first surface  732  of the main logic board  730 , for example, by soldering or other methods of fixture. In some examples, the first surface  732  of the main logic board  730  can include one or more expansion slots. For example, the first surface  732  of the main logic board  730  can include one or more computer expansion bus interconnects. In some examples, a computer expansion interconnect can be serial or parallel computer expansion bus interconnects such as PCI or PCIe slots. The interconnects  761 ,  762 ,  763 ,  764 ,  765 ,  766 ,  767 ,  768 ,  769 , and  770  can allow a user to add and connect additional components to the electronic device to allow for additional functionality, as desired. Although  FIG.  18    shows one particular arrangement of interconnects  761 ,  762 ,  763 ,  764 ,  765 ,  766 ,  767 ,  768 ,  769 , and  770 , the interconnects can be arranged in substantially any orientation on the first surface  732  of the main logic board  730 . In some examples, the arrangement of the interconnects  761 ,  762 ,  763 ,  764 ,  765 ,  766 ,  767 ,  768 ,  769 , and  770  can allow for the easy removal, addition, or replacement of one or more components, as described herein, providing modularity and configurability to the electronic device. In some examples, the main logic board  730  can include 10 interconnects, 11 interconnects, 12 interconnects, or even more. 
     The main logic board  730  can define an aperture or through-hole  760 . The aperture  760  can serve to provide a fluid communication path between pressure zones on either side of the main logic board  730 , as described herein. In some examples, the aperture  760  can have a substantially rectangular shape, as depicted. In some examples, the aperture  760  can have any shape or size as desired and as determined by, for example, a desired level of airflow through the aperture  760 . In some examples, the main logic board  730  can define multiple apertures, as desired. In some examples, multiple apertures can be located at the approximate location of the aperture  760  or can be positioned at any location on the main logic board  730 , as desired to provide a desired level or airflow therethrough. Additional details of the main logic board  730  are provided below with reference to  FIG.  19   . 
       FIG.  19    illustrates another perspective view of the main logic board  730 , showing the second surface  734  disposed substantially opposite the first surface  732 . As discussed herein, the main logic board  730  can include electronic components disposed on two opposite sides, thereby allowing for components of the electronic device to be positioned in different pressure zones, to allow for optimal cooling and thermal management, while still providing ease of access to a user or technician. Whereas components such as CPU and GPU can be connected to the first surface  732  of the main logic board  730 , other components, such as memory components, can be positioned on the second surface  734 . 
     In some examples, the main logic board  730  can include a number of slots  771  or connections that can receive modules, such as memory modules, which can be connected to the electronic device. In some examples, one or more memory modules  772 , such as dual inline memory modules (DIMMs) can be connected to the main logic board  730 . The main logic board  730  can also include components such as a heatsink  774  disposed on the second surface  734 . Again, the position of a component such as a heatsink  774  on the second surface  734  allows air to flow past the heatsink  774  to provide cooling and thermal management, without interrupting or impeding airflow to other components, for example, those positioned on the first surface  732 . As discussed, the air-moving system of the electronic device can include a second air-moving apparatus, for example, blower  728 . In some examples, the blower  728  can be connected to or affixed to the main logic board  730 , for example, via any manner of attachment features in the blower housing and/or main logic board  730 . In some examples, the blower  728  can be positioned at least partially over or can cover or occlude all or some of the aperture  760  of the main logic board  730 . In this way, the blower  728  can move air from the first zone into the second zone and out of the electronic device. That is, the blower  728  can pull or suck in air from the first zone through the aperture  760 , as described herein, to create airflow between the zones and to provide a negative air pressure in the second zone. The second air-moving apparatus can also include a panel  780  that can serve to further seal or isolate the second zone, for example, by preventing air from flowing into the second zone from the ambient environment at the location of the panel  780 . The panel  780  can also include a cut-out, through hole, or aperture  775  that can align with the exhaust of the blower  728  to allow the blower to expel air from the second zone into the ambient environment. Additional embodiments of the structure and arrangement of an electronic device including a housing defining an internal volume divided into one or more zones by a component or components within the internal volume are described below, with reference to  FIG.  20   . 
       FIG.  20    illustrates a perspective view of components of an electronic device  800  including a seal or gasket  852 , a frame  840 , and a component  830 , such as a main logic board. The electronic device  800  is merely one representative example of a device that can be used in conjunction with the systems and concepts disclosed herein. The electronic device  800  can be, for example, a desktop computer and can be substantially similar to, and can include any of the features of the electronic devices  100 ,  200 ,  400 , and  600  described herein. Additionally, the seal  852  can be substantially similar to the sealing component  652  described with respect to  FIG.  16   . 
     As shown, the seal  852  can include multiple portions that can be oriented in multiple directions with respect to the frame  840  and the electronic device  800 . For example, top and bottom portions of the sealing member can run approximately along a length of the electronic device  800 , for example, along a portion of the periphery of the main logic board  830 , while side portions of the seal  852  can run substantially vertically and perpendicular to the top and bottom portions along a portion of the periphery of the main logic board  830 . In this way, the seal  852  can ensure that any gap between the main logic board  830  and the frame  840  or the sleeve of the electronic device is filled to a desired degree to prevent undesired airflow therethrough. The seal  852  can include any compressible or compliant material as desired, such as, for example, a polymer material, such as rubber. Importantly, the material of the seal  852  as well as the placement and configuration, can be configured to prevent high levels of static friction between the seal  852  and a shell of the electronic device  800 , such that the shell can be readily removed from the frame  840  and the seal  852  without the need for high levels of force. 
       FIG.  21    illustrates a cross-sectional view of the seal  852 , including a body  853  and a compressible lip  854  extending from the body  853 . The lip  854  can extend around substantially the entire periphery of the body  853 , although the orientation of the lip  854  with respect to the body  853  may vary along different portions of the seal  852 . This variance can allow the flexible lip  854  to collapse in the correct direction, namely towards the body  853 , when engaged by the shell, rather than being peeled away from the body  853 , which may not provide a desired level of sealing. Thus, in some examples, the lip  854  is oriented with respect to the seal body  853  such that the shell compresses the lip  854  in a direction against the seal body  853  at a first position adjacent to the electronic component  830 , for example, along a top portion of the seal  852 , and in the direction against the seal body  853  at a second position adjacent to the electronic component  830  opposite the first position, for example, along the bottom portion of the seal  852 .  FIGS.  22  and  23 A -B further describe details of additional components of an electronic device, as described herein. 
       FIG.  22    illustrates a perspective view of a cable retention component  901  of an electronic device. The cable retention component  901  can be substantially similar to the cable retention component  230  described with respect to  FIG.  3   . The cable retention component  901  can engage with a portion of the housing of an electronic device, such as a recess or slot, and can be removable from the housing by a user. In some examples, the cable retention component  901  can include a protrusion or flange  902  that can extend from the body of the component and can be sized to correspond and engage with the slot of the housing. In some examples, the cable retention component  901  can be secured by a magnet of the housing that is disposed adjacent to the area where the cable retention component  901  is to be positioned. The cable retention component  901  can at least partially define an aperture  910  and can combine with and attach to the housing to define an aperture sized to allow one or more cables to pass therethrough as, described above. 
       FIGS.  23 A and  23 B  illustrate a top view of the cable retention component  901  including a recess  903  in the exterior surface of the cable retention component  901  illustrated with dashed lines. The recess  903  can house a pin  904  that is moveable between a first position inside the recess  903  as shown in  FIG.  23 A  and a second position where the pin  904  extends at least partially outside of the recess  903  as shown in  FIG.  23 B . Thus, the pin  904  is at least partially retractable into the body of the cable retention component  901 . In some examples, the cable retention component  901  can include a magnet within the body and/or within the recess  903  that can exert an attractive magnetic force on the pin  904  to retain it within the recess  903 , for example, when the cable retention component  901  is not positioned on the electronic device. In use, for example, when the cable retention component  901  engages with the electronic device to define an aperture  910 , a magnet included in or on the housing and disposed substantially adjacent to the recess  903  when the cable retention component  901  is attached to the housing can also exert an attractive force on the pin  904 . In some examples, the magnet of the electronic device can exert a greater or stronger attractive force on the pin  904  than the magnet of the cable retention component  901  to cause the pin  904  to extend at least partially out of the recess  903 . In some examples, the housing can include a recess or an additional feature that can engage the pin  904  once it has at least partially extended from the recess  903 , to retain or assist in retaining the cable retention component  901  in a desired position on the housing. In some examples, the cable retention component  901  can include two or more pins and corresponding recesses. For example, as shown in  FIG.  22   , the cable retention component  901  can include two recesses  903  and two pins disposed therein.  FIGS.  24  and  25    further describe details of additional components of an electronic device as described herein. 
       FIG.  24    illustrates an exploded view of a processor  1001  of an electronic device that can be substantially similar to the electronic device  100 ,  200 ,  400 ,  600 , described herein, along with a heatsink assembly  1010  that is configured to contact and exert pressure on the processor  1001  to draw heat away from the processor  1001  and to assist with the thermal management of both the processor  1001  itself and the electronic device as a whole. In some examples, the processor  1001  can be a central processing unit of an electronic device and can be affixed to, disposed on, or otherwise attached to a logic board, such as any of the main logic boards  630 ,  730  described herein. 
     The heatsink assembly  1010  can be retained against the processor  1001  by one or more lifting components or lifters  1020 ,  1022  that can cooperate with a backplate  1030  and the heatsink assembly  1010  to cause the heatsink assembly  1010  exert a desired amount of pressure on the processor  1001 . In some examples, the lifters  1020 ,  1022  and backplate  1030  can exert at least about 400 N on the processor  1001  through the heatsink assembly  1010 . In some examples, the associated components of the electronic device can exert at least about 900 N, 1000 N, 1100 N, or an even greater amount of force on the processor  1001  through the heatsink assembly  1010 . The pressure exerted on the processor  1001  by the heatsink assembly  1010  can provide for an intimate thermal contact between the processor  1001  and the heatsink assembly  1010 , and can provide desired levels of thermal conduction away from the processor  1001  in order to achieve desired levels of processor performance. Additionally, as described herein, the geometry and configuration of the lifters  1020 ,  1022 , heatsink assembly  1010 , backplate  1030 , processor  1001 , and the electronic device can provide for airflow pathways over the heatsink assembly  1010  to allow for desired levels of thermal management, while still allowing access to the processor  1001  from a single side when the heatsink assembly  1010  is removed, for example, to allow for repair, replacement, or upgrade of the processor  1001 . 
     Accordingly, in some examples, the processor  1001  can be disposed on or over the backplate  1030  such that the backplate  1030  underlies the processor  1001 . The backplate can also define a number of backplate apertures  1031 ,  1033  that can be positioned substantially adjacent to a periphery of the processor  1001 . A first lifter  1020  can be disposed over the backplate  1030  and substantially adjacent or near to a periphery of the processor  1001 . The first lifter  1020  can have an elongated form, although it can be substantially any shape or design, as desired. The first lifter  1020  can define a first aperture  1021  that can be positioned near an end or edge of the first lifter  1020  and a second aperture  1023  that can be positioned near an end or edge of the first lifter  1020  opposite the first aperture  1021 , although substantially any configuration of apertures can be used. The first lifter  1020  can be positioned such that the first and second apertures  1021 ,  1023  can be substantially in line with the apertures  1031 ,  1033  of the backplate  1030 . 
     As illustrated in the cross-sectional view of  FIG.  25   , the first lifter  1020  can also define a lifting feature or attachment feature  1024  that can, for example, be centrally positioned on the first lifter  1020 , although substantially any location can be used. The lifting feature  1024  can be configured to engage with a corresponding attachment member  1012  that can pass through an aperture of the heatsink assembly  1010  to engage lifting feature  1024  and secure the heatsink assembly  1010  thereto. The heatsink assembly  1010  can thus directly overlie the processor  1001  and can be coupled to the first lifter  1020  through attachment member  1012  and the lifting feature  1024 . In some examples, the lifting feature  1024  can include threads and the attachment member  1012  can include corresponding threads such that the engagement between the two retains the heatsink assembly  1010  against the processor  1001 . 
     The lifter  1020  can further include a first spring  1041  and a second spring  1043  underlying the backplate  1030  and substantially in line with the backplate aperture  1031 ,  1033 . The first and second springs  1041 ,  1043  can be coupled to the backplate  1030  by corresponding retaining members  1051 ,  1053  that can extend at least partially through a spring  1041 ,  1043  and can engage with the lifter  1020 , for example, through the apertures  1031 ,  1033  to cause the lifter  1020 , and the attached heatsink assembly  1010 , to exert a desired amount of force on the processor  1001 . 
     The electronic device can also include a second lifter  1022  that can be substantially similar to the first lifter  1020  and can likewise define apertures  1027  that can be in line with the apertures of the backplate  1030 . Springs  1045 ,  1047  can be retained with retaining members  1055 ,  1057  in a similar manner as the first lifter  1020 , and a second attachment member can engage with a lifting feature of the second lifter  1022  as described with respect to the first lifter  1020 . Although two lifters are illustrated in the present example, any number of lifters can be used as desired.  FIGS.  26 ,  27 , and  28    further describe details of additional components of an electronic device, as described herein. 
       FIG.  26    illustrates a perspective view of a component of an electronic device, in this example, a power supply unit  1100 . The power supply unit  1100  can be a component of any of the electronic devices described herein, including electronic devices  100 ,  200 ,  400 , and  600 . The power supply unit  1100  can also be substantially similar to, and can include any of the features of the power supply units  418  and  618  described herein. 
     As explained herein, in some examples, it can be desirable to cause air to flow directly at or through a particularly high-power component of an electronic device. In some examples, such a component can be positioned directly in an airflow pathway in the internal volume of the electronic device, for example, at a location of communication between a positive air pressure zone and a negative air pressure zone. In this way, a relatively large volume of air can be moved over or through the component to provide a desired level of thermal energy removal and thermal management for the component, such as the power supply unit  1100 , and the electronic device as a whole. 
     In some examples, as described herein, the power supply unit  1100  can be positioned in an airflow pathway because it is typically the densest component of the electronic device, and prevents the largest obstruction to airflow. As such, it can be desirable to position the power supply unit  1100  in a high-volume airflow pathway. Further, in some examples, the power supply unit  1100  can be responsible for up to about 10% of the power, and thus generated thermal energy, for the components within the internal volume of the electronic device. Accordingly, in some examples, it can be desirable to provide high levels of air flow, and thus cooling, to the power supply unit  1100 . 
     The power supply unit  1100  can include a housing or body  1106  that can define an exterior surface of the power supply unit  1100 . In some examples, the body  1106  of the power supply  1100  has an approximately rectangular prismatic shape and can be formed by the combination of two mating components. According to one example, a first component can define a top exterior surface, a bottom exterior surface, and a first side exterior surface and a second component can define a front exterior surface, a back exterior surface, and a second side exterior surface disposed opposite the first side exterior surface. In some examples, the body  1106  can include or be formed from aluminum and can be, for example, anodized to a desired color. 
     The power supply unit  1100  can also include a connector or contact  1102  that can, for example, connect to an expansion slot or other interface on a main logic board, as described herein. Such a connection can allow for the electronic device to control the power supply unit  1100  and the power distributed from the power supply unit  1100 . An alternating current (AC) power input port  1104  of the power supply unit  1100  can be used to connect to an external source of AC power which the power supply unit can transform into DC power for use by the components of the electronic device. In some examples, the AC input port or inlet  1104  can be electrically connected to the connector  1102  and mechanically connected to the body  1106  by an arm within the internal volume of the power supply, the AC input port  1104  can be configured to move at least about 0.3 mm, at least about 0.5 mm, or at least about 1 mm in two or more axes relative to the body  1106  of the power supply unit  1100 . Further details of the power supply unit  1100  are provided below with reference to  FIGS.  27  and  28   . 
       FIG.  27    illustrates a side view of the power supply unit  1100 , including a heatsink  1108 . The heatsink  1108  can be thermally connected to the power supply unit to assist in distributing thermal energy generated by the power supply unit  1100  to the air flowing past the power supply unit  1100 . In some examples, the heatsink  1108  can include any highly thermally conductive material, such as metallic materials like copper, aluminum, and other metals or alloys. As air moved by the air-moving system of the electronic device moves past the heatsink  1108 , thermal energy is transferred to the air which is then expelled from the electronic device into the ambient environment, thereby cooling the power supply unit  1100  and the device. 
       FIG.  28    illustrates a top view of the power supply unit  1100 . As can be seen, in some examples, the heatsink  1108  can be recessed in the body  1106  of the power supply unit  1100 . This recess can provide for a pathway for air to flow to the heatsink  1108  and past the power supply unit  1100 , thereby assisting in thermal management. In some examples, the recess can be aligned with an aperture in the main logic board of an electronic device to provide an airflow pathway between pressure zones of the device. 
     As noted above, any number or variety of components, as described herein, can be included in an electronic device. The components can include any combination of the features described herein and can be arranged in any of the configurations described herein. The structure and arrangement of an electronic device including a housing defining an internal volume divided into one or more zones by a component or components within the internal volume, as well as the concepts regarding zone pressures and airflow can apply not only to the specific examples discussed herein, but to any number of embodiments in any combination. 
     As described above, one aspect of the present technology is the gathering and use of data available from various sources. The present disclosure contemplates that in some instances, this gathered data may include personal information data that uniquely identifies or can be used to contact or locate a specific person. Such personal information data can include demographic data, location-based data, telephone numbers, email addresses, twitter ID&#39;s, home addresses, data or records relating to a user&#39;s health or level of fitness (e.g., vital signs measurements, medication information, exercise information), date of birth, or any other identifying or personal information. 
     The present disclosure recognizes that the use of such personal information data, in the present technology, can be used to the benefit of users. Further, other uses for personal information data that benefit the user are also contemplated by the present disclosure. For instance, health and fitness data may be used to provide insights into a user&#39;s general wellness or may be used as positive feedback to individuals using technology to pursue wellness goals. 
     The present disclosure contemplates that the entities responsible for the collection, analysis, disclosure, transfer, storage, or other use of such personal information data will comply with well-established privacy policies and/or privacy practices. In particular, such entities should implement and consistently use privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining personal information data private and secure. Such policies should be easily accessible by users and should be updated as the collection and/or use of data changes. Personal information from users should be collected for legitimate and reasonable uses of the entity and not shared or sold outside of those legitimate uses. Further, such collection/sharing should occur after receiving the informed consent of the users. Additionally, such entities should consider taking any needed steps for safeguarding and securing access to such personal information data and ensuring that others with access to the personal information data adhere to their privacy policies and procedures. Further, such entities can subject themselves to evaluation by third parties to certify their adherence to widely accepted privacy policies and practices. In addition, policies and practices should be adapted for the particular types of personal information data being collected and/or accessed and adapted to applicable laws and standards, including jurisdiction-specific considerations. For instance, in the US, collection of or access to certain health data may be governed by federal and/or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); whereas health data in other countries may be subject to other regulations and policies and should be handled accordingly. Hence different privacy practices should be maintained for different personal data types in each country. 
     Despite the foregoing, the present disclosure also contemplates embodiments in which users selectively block the use of, or access to, personal information data. That is, the present disclosure contemplates that hardware and/or software elements can be provided to prevent or block access to such personal information data. For example, the present technology can be configured to allow users to select to “opt in” or “opt out” of participation in the collection of personal information data during registration for services or anytime thereafter. In addition to providing “opt in” and “opt out” options, the present disclosure contemplates providing notifications relating to the access or use of personal information. For instance, a user may be notified upon downloading an app that their personal information data will be accessed and then reminded again just before personal information data is accessed by the app. 
     Moreover, it is the intent of the present disclosure that personal information data should be managed and handled in a way to minimize risks of unintentional or unauthorized access or use. Risk can be minimized by limiting the collection of data and deleting data once it is no longer needed. In addition, and when applicable, including in certain health related applications, data de-identification can be used to protect a user&#39;s privacy. De-identification may be facilitated, when appropriate, by removing specific identifiers (e.g., date of birth, etc.), controlling the amount or specificity of data stored (e.g., collecting location data a city level rather than at an address level), controlling how data is stored (e.g., aggregating data across users), and/or other methods. 
     Therefore, although the present disclosure broadly covers use of personal information data to implement one or more various disclosed embodiments, the present disclosure also contemplates that the various embodiments can also be implemented without the need for accessing such personal information data. That is, the various embodiments of the present technology are not rendered inoperable due to the lack of all or a portion of such personal information data. 
     As used herein, the terms exterior, outer, interior, inner, top, and bottom are used for reference purposes only. An exterior or outer portion of a component can form a portion of an exterior surface of the component but may not necessarily form the entire exterior of outer surface thereof. Similarly, the interior or inner portion of a component can form or define an interior or inner portion of the component but can also form or define a portion of an exterior or outer surface of the component. A top portion of a component can be located above a bottom portion in some orientations of the component, but can also be located in line with, below, or in other spatial relationships with the bottom portion depending on the orientation of the component. 
     Any direction, positional, and relational terms as used herein, for example, terms such as orthogonal, adjacent, and parallel, are intended to include not only the specific and exact direction, position, and/or relation, but also any direction, position, and/or relation that is within 1%, 5%, 10%, 15% or thereabouts. For example, the term orthogonal can be intended to refer not only to two bodies positioned at an angle of 90° relative to one another, but also two bodies positioned at any angle between 80° and 110° relative to one another. 
     Various inventions have been described herein with reference to certain specific embodiments and examples. However, they will be recognized by those skilled in the art that many variations are possible without departing from the scope and spirit of the inventions disclosed herein, in that those inventions set forth in the claims below are intended to cover all variations and modifications of the inventions disclosed without departing from the spirit of the inventions. The terms “including:” and “having” come as used in the specification and claims shall have the same meaning as the term “comprising.” 
     The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the described embodiments. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the described embodiments. Thus, the foregoing descriptions of the specific embodiments described herein are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. It will be apparent to one of ordinary skill in the art that many modifications and variations are possible in view of the above teachings.

Metadata:
Filing Date: 20190927
Publication Date: 20230131
Grant Date: 20230131
Priority Date: 20190531
Inventors: ANDRE, BART K.
Barrera, Joel D.
FARAHANI, HOUTAN R.
GUTERMAN, Jerzy S.
HOWARTH, RICHARD P.
LANAS, MARIEL L.
LE, SON C.
MCBROOM, MICHAEL D.
DUTERVIL MUBARAK, RODRIGO
PASEMAN, SABRINA K.
ZHU, CHENTIAN
CUSEO, JAMES M.
Assignee: APPLE INC
CPC Classifications: [{"code": "G06F1/182", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q5/30", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/2291", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F1/20", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/2266", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/44", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/182", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q5/30", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/2291", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01Q1/2291", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/182", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/20", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q5/378", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/2266", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/20", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/183", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q13/10", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q1/2266", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 73550300