Patent Description:
The present invention relates to the field of communications technologies, and in particular, to a connection apparatus, a network board connection system, and a communications device.

A line card and a network board are disposed in a communications device such as a switch. The line card is configured to provide an interface for user equipment for use. The network board is used as a data switching unit and connected to different line cards, so that the different line cards exchange data with each other by using the network board. Currently, because a loss of data transmitted at a high rate on a link of a printed circuit board (Printed Circuit Board, PCB) is relatively large, a line card and a network board are usually connected by using an orthogonal connection architecture, to reduce a distance for transmitting data on the PCB board, and reduce a loss caused by data transmission.

The orthogonal connection architecture means that a line card and a network board are perpendicular to each other and connected to each other by using a connector. As shown in <FIG>, a communications device includes M line cards <NUM> and N network boards <NUM>. M connectors <NUM> are installed on a side on which each network board <NUM> is connected to the line cards <NUM>. Each connector <NUM> is connected to a network board chip <NUM> on a network board <NUM> on which the connector <NUM> is located. N connectors <NUM> are installed on a side on which each line card <NUM> is connected to the network boards <NUM>. Each connector <NUM> is connected to a line card chip <NUM> on a line card <NUM> on which the connector <NUM> is located. The M line cards <NUM> are orthogonally connected to the N network boards <NUM> by using the M connectors <NUM> and the N connectors <NUM>.

It can be learned from a connection manner of the line cards and the network boards shown in <FIG> that a length of the network board greatly affects a quantity of line cards connected to the network board, and the quantity of line cards is a key factor that determines a capacity of the communications device. Rapid development of network technologies is accompanied with an increasingly higher requirement for a capacity of a communications device. However, due to limitation of a PCB board making standard, a length of a network board is also limited. Therefore, a quantity of line cards that can be connected to the network board is limited due to an orthogonal connection architecture of the network board and a line card, and the capacity of the communications device is difficult to improve.

<CIT> discloses a pod switch that includes line cards arranged in parallel connecting on one side of a midplane circuit board that is orthogonal to the line cards and uplink cards also arranged in parallel connecting on an opposite side of the midplane circuit board. The uplink cards are orthogonal to both the midplane circuit board and to the line cards. Each line card provides links to computing nodes. The uplink cards connect to the core switch array.

Embodiments of the present invention provide a connection apparatus, a network board connection system, and a communications device, to resolve a problem that a capacity of the communications device is difficult to improve.

According to a first example, the present invention provides a connection apparatus, including:.

With reference to the first example, in a first possible implementation of the first example, the second connector is movably connected to the second side face in a direction perpendicular to the second side face, to be disposed close to and away from the second side face.

With reference to the first example or the possible implementation, in a second possible implementation of the first example, when the connection apparatus is connected to the network board, the second connector is disposed away from the second side face.

With reference to the first example or the possible implementation, in a third possible implementation of the first example, a quantity of first connectors is the same as a quantity of second connectors.

With reference to the first example or the possible implementation, in a fourth possible implementation of the first example, connectors in the first connector are one-to-one connected to connectors in the second connector.

With reference to the first example or the possible implementation, in a fifth possible implementation of the first example, the first connector is connected to the second connector by using an optical cable or an electrical cable.

According to a second example, the present invention provides a network board connection system, including a network board and the connection apparatus according to the first example.

The network board includes a network board body, a network board chip disposed on the network board body, a third connector, and a fourth connector.

The third connector is disposed on a first network board side of the network board body and connected to the network board chip.

The fourth connector is disposed on a side adjacent to the first network board side of the network board body and connected to the network board chip.

The third connector is configured to be connected to a connector of a second line card, so that the network board is orthogonally connected to the second line card.

The fourth connector is connected to the second connector of the connection apparatus, so that the connection apparatus is connected to the network board.

When the connection apparatus is connected to the network board, a connection interface of the first connector and a connection interface of the third connector face a same direction.

With reference to the second example, in a first possible implementation of the second example, the first connector and the third connector are roughly aligned in a direction from the connection apparatus to the network board.

With reference to the second example or the possible implementation, in a second possible implementation of the second example, a quantity of second connectors is the same as a quantity of fourth connectors.

With reference to the second example or the possible implementation, in a third possible implementation of the second example, connectors in the second connector are one-to-one connected to connectors in the fourth connector.

According to the third example, the present invention provides a communications device, including a first line card, a second line card, and the network board connection system according to the second example.

The first line card includes a first line card body and a fifth connector disposed on a first line card body side of the first line card body.

The second line card includes a second line card body and a sixth connector disposed on a second line card body side of the second line card body.

The connection apparatus is connected to the first line card by using the first connector and the fifth connector, and the first line card body is perpendicular to the connection apparatus.

The network board is connected to the second line card by using the third connector and the sixth connector, and the first line card body is perpendicular to the network board body.

The first line card side and the second line card side are roughly parallel to each other.

With reference to the third example or the possible implementation, in a first possible implementation of the third example, the first network board side is roughly perpendicular to the second line card side.

The embodiments of the present invention provide a connection apparatus, a network board connection system, and a communications device. In this embodiment of the present invention, the connection apparatus includes a housing case. The housing case includes a first side face and a second side face that are intersected and disposed adjacent to each other. The first connector configured to be connected to the connector of the first line card is disposed on the first side face, so that the connection apparatus is orthogonally connected to the first line card. The second connector configured to be connected to the connector of the network board is disposed on the second side face. The first connector is connected to the second connector. In the embodiments of the present invention, the connection apparatus is connected to the connector of the network board by using the second connector, so that the connection apparatus is connected to the network board. In addition, the connection apparatus is orthogonally connected to the first line card by using the first connector. Therefore, it is equivalent to that the first line card connected to the connection apparatus is connected to the connector of the network board, in other words, connected to the network board. In this way, it is equivalent to that the connection apparatus increases a quantity of connectors connected to line cards in the network board, and may further increase a quantity of line cards orthogonally connected to each network board. In other words, when a length of a network board cannot be increased in the prior art, a quantity of connected line cards is increased by using the connection apparatus, and then a capacity of a communications device is improved.

It should be noted that the embodiments in this application and features in the embodiments may be mutually combined provided that no conflict exists.

An embodiment of the present invention provides a connection apparatus. <FIG> is a schematic structural diagram of a connection apparatus according to an embodiment of the present invention. As shown in <FIG>, the connection apparatus includes a housing case <NUM>, a first connector <NUM>, and a second connector <NUM>.

The housing case <NUM> includes a first side face and a second side face that are intersected and disposed adjacent to each other. The first connector <NUM> is disposed on the first side face and configured to be connected to a connector of a first line card, so that the connection apparatus is orthogonally connected to the first line card. The second connector <NUM> is disposed on the second side face and connected to the first connector <NUM>. The second connector <NUM> is configured to be connected to a connector of a network board.

Specifically, the connection apparatus includes the housing case <NUM>. As shown in <FIG>, an example in which a structure of the housing case <NUM> is a cuboid is used for description. The housing case <NUM> includes two side faces that are intersected and adjacent to each other: the first side face and the second side face. The first connector <NUM> is disposed on the first side face, the second connector <NUM> is disposed on the second side face, and the first connector <NUM> is connected to the second connector <NUM>. The first connector <NUM> is configured to be connected to the connector of the first line card, so that the connection apparatus can be orthogonally connected to the first line card. The second connector <NUM> is connected to the connector of the network board, so that the connection apparatus can be connected to the network board.

The connection apparatus is connected to the connector of the network board by using the second connector <NUM>, so that the connection apparatus is connected to the network board. In addition, the connection apparatus is orthogonally connected to the first line card by using the first connector <NUM>. Therefore, it is equivalent to that the first line card connected to the connection apparatus is connected to the connector of the network board, in other words, connected to the network board. In this way, it is equivalent to that the connection apparatus increases a quantity of connectors connected to line cards in the network board, and may further increase a quantity of line cards orthogonally connected to each network board. In other words, when a length of a network board cannot be increased in the prior art, a quantity of connected line cards is increased by using the connection apparatus, and then a capacity of a communications device is improved.

In addition, the network board is orthogonally connected to a line card, and the connection apparatus is also orthogonally connected to the first line card. Therefore, when the connection apparatus is connected to the network board, the first line card connected to the connection apparatus and the line card connected to the network board can be arranged in a same manner, and then respectively orthogonally connected to the connection apparatus and the network board, to increase a quantity of line cards connected to the network board and properly arrange the line card, the connection apparatus, and the network board, to reduce space occupied when the line card, the connection apparatus and the network board are interconnected to each other, and reduce a size of the communications device.

It should be noted that a quantity of connectors included in the first connector <NUM> and a quantity of connectors included in the second connector <NUM> are not limited in the embodiments of the present invention. When the first connector <NUM> includes at least two connectors, each connector is connected to a connector of a different line card in the first line card. When the first connector <NUM> and the second connector <NUM> both include at least two connectors, a connection manner of the first connector <NUM> and the second connector <NUM> may include that connectors in the first connector <NUM> are one-to-one connected to connectors in the second connector <NUM>. As shown in <FIG>, the first connector <NUM> includes two connectors, and the second connector <NUM> includes two connectors. When the first connector <NUM> is connected to the second connector <NUM>, the two connectors in the first connector <NUM> are one-to-one connected to the two connectors in the second connector <NUM>.

In this embodiment of the present invention, the first connector <NUM> may be connected to the second connector <NUM> by using an electrical cable or an optical cable. Because a loss of data transmitted at a high rate on a link of a PCB board is relatively large, in this embodiment of the present invention, the first connector <NUM> may be connected to the second connector <NUM> by using an electrical cable or an optical cable, to reduce a loss of data in a high-rate transmission process. The electrical cable or the optical cable connecting the first connector <NUM> and the second connector <NUM> may be placed in the housing case <NUM>.

In another embodiment of the present invention, the second connector <NUM> is movably connected to the second side face in a direction perpendicular to the second side face, to be disposed close to and away from the second side face.

In this embodiment of the present invention, to facilitate connection and disconnection between the connection apparatus and the network board, the second connector <NUM> may be disposed as a movable connector. In other words, the second connector <NUM> disposed on the second side face may be movable. To be specific, the second connector <NUM> may be close to or away from the second side face in a direction perpendicular to the second side face.

In this way, connection and disconnection between the connection apparatus and the network board can be implemented by moving the second connector <NUM> without moving the connection apparatus or the network board, and this operation is simple and convenient and can further reduce plugging and unplugging forces that the network board bears.

Specifically, when the connection apparatus is connected to the network board, the second connector <NUM> is disposed away from the second side face. In other words, when the connection apparatus is connected to the network board, the second connector <NUM> is in a state of away from the second side face. When the connection apparatus and the network board need to be disconnected, the second connector <NUM> may be moved to a state of close to the second side face, to disconnect the connection apparatus and the network board.

When the movable second connector <NUM> is used to connect the network board and the connection apparatus, first, the network board and the connection apparatus may be moved to predetermined locations, and then, the second connector <NUM> is moved, so that the second connector <NUM> is away from the second side face and connected to a connector in the network board, to implement connection between the network board and the connection apparatus. If the network board and the connection apparatus need to be disconnected, the second connector <NUM> may be moved, so that the second connector <NUM> is close to the second side face and disconnected from the connector in the network board, to implement disconnection between the network board and the connection apparatus.

In still another embodiment of the present invention, the connection apparatus includes an operation component. The operation component is connected to the second connector <NUM>. When the operation component is operated, the operation component may drive the second connector <NUM> to move.

To facilitate control of movement of the second connector <NUM>, the connection apparatus may further include the operation component. The operation component is connected to the second connector <NUM>, and movement of the second connector <NUM> may be controlled by operating the operation component.

Specifically, in this embodiment of the present invention, the operation component may specifically be a wrench.

It should be noted that, in this embodiment of the present invention, a disposition manner and a structure of the operation component are not limited, and a structure in which the movement of the second connector <NUM> is controlled by using the operation component is not limited.

In this embodiment of the present invention, an operation component may further be disposed on the connection apparatus to control plugging and unplugging of the connection apparatus and the first line card, to facilitate control of plugging and unplugging of the connection apparatus and the first line card. The connection apparatus may be plugged and unplugged in a direction of connection to the first line card, and may further be plugged and unplugged in a direction of connection to the network board. Therefore, the connection apparatus can be connected to the first line card and the network board through two-dimensional plugging and unplugging.

Still another embodiment of the present invention provides a network board connection system. <FIG> is a schematic structural diagram of a network board connection system according to still another embodiment of the present invention. As shown in <FIG>, the network board connection system includes a network board and the connection apparatus in the embodiment shown in <FIG>.

The network board includes: a network board body <NUM>, a network board chip <NUM> disposed on the network board body <NUM>, a third connector <NUM>, and a fourth connector <NUM>. The third connector <NUM> is disposed on a first network board side of the network board body <NUM> and connected to the network board chip <NUM>. The fourth connector <NUM> is disposed on a side adjacent to the first network board side of the network board body <NUM> and connected to the network board chip <NUM>. The third connector <NUM> is configured to be connected to a connector of a second line card, so that the network board is orthogonally connected to the second line card. The fourth connector <NUM> is connected to the second connector <NUM> of the connection apparatus, so that the connection apparatus is connected to the network board. When the connection apparatus is connected to the network board, a connection interface of the first connector <NUM> and a connection interface of the third connector <NUM> face a same direction.

Specifically, as shown in <FIG>, the third connector <NUM> connected to the second line card is disposed on the first network board side orthogonally connected to the second line card in the network board body <NUM>, and the fourth connector <NUM> connected to the connection apparatus is disposed on the side adjacent to the first network board side of the network board body <NUM>. The third connector <NUM> and the fourth connector <NUM> each are connected to the network board chip <NUM> on the network board body <NUM>. The fourth connector <NUM> is connected to the second connector <NUM> of the connection apparatus, so that the connection apparatus is connected to the network board, and when the connection apparatus is connected to the network board, the connection interface of the first connector <NUM> and the connection interface of the third connector <NUM> face the same direction.

It should be noted that a communications device usually includes a plurality of network boards, and each network board may be connected to the connection apparatus to form a network board connection system. A structure in which one network board is connected to the connection apparatus is used as an example for description in this embodiment of the present invention.

Because the fourth connector <NUM> is connected to the network board chip <NUM>, when the fourth connector <NUM> is connected to the second connector <NUM>, the second connector <NUM> is also connected to the network board chip <NUM>. The first connector <NUM> is connected to the second connector <NUM> in the connection apparatus. When the fourth connector <NUM> is connected to the second connector <NUM>, the first connector <NUM> is also connected to the network board chip <NUM>. In this case, the first line card connected to the connection apparatus is also connected to the network board chip <NUM>, in other words, may exchange data with the second line card connected to the network board. Therefore, the first connector <NUM> of the connection apparatus may implement the same function as the third connector <NUM> in the network board. In other words, the line card is connected to the network board chip <NUM> and data is exchanged between the line cards. In this way, it is equivalent to that the connection apparatus increases a quantity of connectors connected to line cards in the network board, and may further increase a quantity of line cards orthogonally connected to each network board. In other words, when a length of a network board cannot be increased in the prior art, a quantity of connected line cards is increased by using the connection apparatus, and then a capacity of a communications device is improved.

It should be noted that, in this embodiment of the present invention, because the network board is connected to the connection apparatus, the connector connected to the second line card in the network board may be properly moved to the connection apparatus, to reduce a quantity of second line cards connected to the network board, and further reduce plugging and unplugging forces that the network board bears during plugging and unplugging of the line card.

In addition, the network board is orthogonally connected to the second line card, and the connection apparatus is also orthogonally connected to the first line card. When the connection apparatus is connected to the network board, the connection interface of the first connector <NUM> and the connection interface of the third connector <NUM> face the same direction. Therefore, the first line card and the second line card may be arranged in a same manner, so as to increase a quantity of line cards connected to the network board and properly arrange the line card, the connection apparatus, and the network board, to reduce space occupied when the line card, the connection apparatus and the network board are interconnected to each other, and reduce a size of the communications device.

It should be noted that, in this embodiment of the present invention, both the second connector <NUM> and the fourth connector <NUM> may include at least two connectors. A quantity of connectors in the second connector <NUM> may be the same as a quantity of connectors in the fourth connector <NUM>. In this case, the connectors in the second connector <NUM> may be one-to-one connected to the connectors in the fourth connector <NUM>. As shown in <FIG>, the second connector <NUM> includes two connectors, and the fourth connector <NUM> includes two connectors. When the second connector <NUM> is connected to the fourth connector <NUM>, the two connectors in the second connector <NUM> are one-to-one connected to the two connectors in the fourth connector <NUM>.

In still another embodiment of the present invention, when the connection apparatus is connected to the network board, the first connector <NUM> and the third connector <NUM> are roughly aligned in a direction from the connection apparatus to the network board.

To make the first line card and the second line card more neatly arranged, when the connection apparatus is connected to the network board, the first connector <NUM> and the third connector <NUM> may be configured to be roughly aligned in a direction from the connection apparatus to the network board. As shown in <FIG>, the first connector <NUM> and the third connector <NUM> are roughly aligned in a vertical direction from the connection apparatus to the network board.

It should be noted that there are two sides adjacent to the first network board side of the network board. In other words, the network board may be respectively connected to two connection apparatuses by using two sides adjacent to the first network board side. This embodiment shown in <FIG> only shows a schematic structure in which the network board is connected to one connection apparatus. A quantity of connection apparatuses connected to the network board is not limited in this embodiment of the present invention.

Specifically, <FIG> is a schematic structural diagram of still another network board connection system according to still another embodiment of the present invention. The communications device usually includes a plurality of network boards. In this embodiment of the present invention, as shown in <FIG>, it is assumed that the communications device includes two network boards, and each network board is connected to two connection apparatuses. For ease of description, a network board located on a front side is referred to as a front side network board, and a network board located on a rear side is referred to as a rear side network board. Structures of two network boards are the same. A specific structure is described by using a structure in which the front side network board is connected to the two connection apparatuses. A connection apparatus connected to the front side network board includes a first connection apparatus located on an upper part of the front side network board and a second connection apparatus located on a lower part of the front side network board.

As shown in <FIG>, the front side network board includes a network board body <NUM>, a network board chip <NUM> disposed on the network board body <NUM>, a third connector <NUM> configured to be connected to a second line card, a fourth connector <NUM> configured to be connected to the first connection apparatus, and a fourth connector <NUM> configured to be connected to the second connection apparatus. The third connector <NUM>, the fourth connector <NUM>, and the fourth connector <NUM> each are connected to the network board chip <NUM>.

The first connection apparatus includes a housing case <NUM>, a second connector <NUM> connected to the fourth connector <NUM>, and a first connector <NUM> connected to a first line card. The first connector <NUM> is connected to the second connector <NUM>.

The second connection apparatus includes a housing case <NUM>, a second connector <NUM> connected to the fourth connector <NUM>, and a first connector <NUM> connected to a first line card. The first connector <NUM> is connected to the second connector <NUM>.

It should be noted that both structures of the first connection apparatus and the second connection apparatus are the same as the structures of the connection apparatus shown in <FIG>. Manners in which the first connection apparatus and the second connection apparatus each are connected to the front side network board are the same as the manner in which the connection apparatus is connected to the network board shown in <FIG>. For details, refer to description of the network board and the connection apparatus in the foregoing embodiment. Details are not described again.

Another embodiment of the present invention further provides a communications device, including a first line card, a second line card, and the network board connection system in the embodiment shown in <FIG> or <FIG>.

The first line card includes a first line card body <NUM> and a fifth connector <NUM> disposed on a first line card side of the first line card body <NUM>. The second line card includes a second line card body <NUM> and a sixth connector <NUM> disposed on a second line card side of the second line card body <NUM>. The connection apparatus is connected to the first line card by using the first connector <NUM> and the fifth connector <NUM>. The first line card body <NUM> is perpendicular to the connection apparatus. The network board is connected to the second line card by using the third connector <NUM> and the sixth connector <NUM>. The first line card body <NUM> is perpendicular to the network board body <NUM>. The first line card side is roughly parallel to the second line card side.

A structure and a principle of the network board connection system included in the communications device in this embodiment of the present invention are the same as those in the embodiment shown in <FIG> or <FIG>. Details are not described again.

Specifically, <FIG> is a schematic structural diagram of a communications device according to another embodiment of the present invention.

As shown in <FIG>, the structure of the network board connection system is the same as the structure of the network board connection system shown in <FIG>. Both the first line card and the second line card further include a line card chip, and a connector on each line card is connected to a line card chip on the line card. The first line card includes two line cards. A fifth connector <NUM> of each line card in the first line card is connected to a first connector <NUM> of a connection apparatus, and a first line card body <NUM> of each line card in the first line card is perpendicular to the connection apparatus. In other words, the first line card is orthogonally connected to the connection apparatus. A manner in which the second line card is orthogonally connected to a network board is shown in <FIG>. The second line card includes two boards. A sixth connector <NUM> of each line card in the second line card is connected to a third connector <NUM> in the network board. A second line card body <NUM> of each line card in the second line card is perpendicular to a network board body <NUM>. In other words, the second line card is orthogonally connected to the network board. A first line card side of each line card in the first line card and a second line card side of each line card in the second line card are roughly parallel to each other.

In this way, the connection apparatus expands a quantity of line cards connected to the network board, to improve a capacity of the communications device. The first line card and the second line card may be arranged in a same manner, and the line card, the connection apparatus, and the network board are properly arranged, to reduce space occupied when the line card, the connection apparatus and the network board are interconnected to each other, and reduce a size of the communications device.

Specifically, <FIG> is a schematic structural diagram of still another communications device according to another embodiment of the present invention. As shown in <FIG>, a structure of a network board connection system is the same as the structure of the network board connection system shown in <FIG>. The communications device includes two network boards. For ease of description, a network board located on a front side is referred to as a front side network board, and a network board located on a rear side is referred to as a rear side network board. Structures of two network boards are the same.

The communications device further includes: a first connection apparatus located on an upper part of the front side network board and a second connection apparatus located on a lower part of the front side network board, a second line card connected to the front side network board, a first line card connected to the first connection apparatus, and a third line card connected to the second connection apparatus. <FIG> is a schematic structural diagram of a first line card, a second line card, and a third line card. The first line card includes a first line card body <NUM>, a line card chip, and a fifth connector <NUM> connected to the line card chip. The second line card includes a second line card body <NUM>, a line card chip, and a sixth connector <NUM> connected to the line card chip. The third line card includes a third line card body <NUM>, a line card chip, and a fifth connector <NUM> connected to the line card chip. One connector in the connector of each line card is configured to be connected to the front side network board or a connection apparatus connected to the front side network board. Another connector is configured to be connected to the rear side network board or a connection apparatus connected to the rear side network board.

The first line card is connected to a first connection apparatus. To be specific, the fifth connector <NUM> located on a front side in the first line card is connected to a first connector <NUM> of the first connection apparatus connected to the front side network board, and the fifth connector <NUM> located on a rear side in the first line card is connected to the first connector <NUM> of the first connection apparatus connected to the rear side network board. During data transmission, the first line card is connected to a network board chip <NUM> by using the fifth connector <NUM>, the first connector <NUM>, a second connector <NUM> connection, and a fourth connector <NUM>, to exchange data with another line card.

The second line card is connected to the network board. To be specific, the sixth connector <NUM> located on a front side in the second line card is connected to a third connector <NUM> on the front side network board, and the sixth connector <NUM> located on a rear side in the second line card is connected to the third connector <NUM> on the rear side network board.

The third line card is connected to a second connection apparatus. To be specific, the fifth connector <NUM> located on a front side in the third line card is connected to a first connector <NUM> of the second connection apparatus connected to the front side network board, and the fifth connector <NUM> located on a rear side in the third line card is connected to the first connector <NUM> of the second connection apparatus connected to the rear side network board. During data transmission, the third line card is connected to the network board chip <NUM> by using the fifth connector <NUM>, the first connector <NUM>, the second connector <NUM> connection, and the fourth connector <NUM>, to exchange data with another line card.

It should be noted that a manner and a principle for connection between the third line card and the second connection apparatus are the same as a manner and a principle for connection between the first line card and the first connection apparatus.

In this way, as shown in <FIG>, the first connection apparatus and the second connection apparatus that are connected to each network board expand a quantity of network boards connected to the line card, improve a capacity of the communications device. The first line card, the second line card, and the third line card may be arranged in a same manner, and the line card, the connection apparatus, and the network board are properly arranged, to reduce space occupied when the line card, the connection apparatus and the network board are interconnected to each other, and reduce a size of the communications device.

Claim 1:
A connection apparatus, comprising:
a housing case (<NUM>), wherein the housing case (<NUM>) has the structure of a cuboid and comprises a first side face and a second side face that are intersected and disposed adjacent to each other;
a first connector (<NUM>), disposed on the first side face and configured to be connected to a connector of a first line card, so that the connection apparatus is orthogonally connected to the first line card; and
a second connector (<NUM>), connected to the first connector (<NUM>), wherein the second connector (<NUM>) is configured to be connected to a connector of a network board;
characterized in that
the second connector (<NUM>) is disposed on the second side face.