Question: The Micro-DVI port, is a proprietary video output port found in the original MacBook Air, it is smaller than the Mini-DVI port used by MacBook, the original model used a combination of polycarbonate and fiberglass casing, which was modeled after what?

Context paragraphs:
Mini-DVI: The Mini-DVI connector is used on certain Apple computers as a digital alternative to the Mini-VGA connector.  Its size is between the full-sized DVI and the tiny Micro-DVI.  It is found on the 12-inch PowerBook G4 (except the original 12-inch 867 MHz PowerBook G4, it used Mini-VGA), Intel-based iMac, the MacBook Intel-based laptop, the Intel-based Xserve, the 2009 Mac mini, and some late model eMacs.

Sudden Motion Sensor: The Sudden Motion Sensor (SMS) is Apple's motion-based data-protection system used in their notebook computer systems.  Apple introduced the system January 1, 2005 in its refreshed PowerBook line, and included it in the iBook line July 26, 2005.  Since that time, Apple has included the system in all of their portable systems (since October 2006), now the MacBook Pro and MacBook Air.

Pentalobe security screw: The Pentalobe security screw (Apple nomenclature), or pentalobe screw drive, is a five-pointed tamper-resistant system primarily used by Apple in its products.  Pentalobe screws have been used by Apple since 2009, when they were first implemented in the 15-inch MacBook Pro.  They have since been used on other MacBook Pro, MacBook Air and iPhone models.  Apple attracted criticism upon the introduction of the pentalobe screw; it was seen as an attempt to lock individuals out of their devices.

MacBook: There have been four separate designs of the MacBook.  The original model used a combination of polycarbonate and fiberglass casing which was modeled after the iBook G4.  The second type was introduced in October 2008 alongside the 15-inch MacBook Pro; the MacBook shared the more expensive laptop's unibody aluminum casing, but omitted FireWire.  A third design, introduced in late 2009, had a polycarbonate unibody casing.

Micro-DVI: The Micro-DVI port is a proprietary video output port found in the original MacBook Air.  It is smaller than the Mini-DVI port used by its MacBook models.  To use the port for displaying video on a standard monitor or television, an adapter must be used.  Both a Micro-DVI to DVI adapter and a Micro-DVI to VGA adapter were bundled with the original MacBook Air.  A Micro-DVI to Video adapter, which provided composite and S-video outputs, was also sold separately.  The Micro-DVI to DVI adapter is only compatible with a DVI-D (digital) signal; DVI-A and DVI-I signals do not work as they do not have the required analog connections.  The Micro-DVI connector was replaced with the Mini DisplayPort connector starting with the Late 2008 MacBook Air.

MacBook Air: The MacBook Air is a line of Macintosh subnotebook computers developed and manufactured by Apple Inc. It consists of a full-size keyboard, a machined aluminum case, and a thin light structure.  The Air is available with a screen size of (measured diagonally) 13.3in (33.782 cm), with different specifications produced by Apple.  As of 2011, all MacBook Air models use solid-state drive storage and Intel Core i5 or i7 CPUs.  A MacBook Air with an 11.6in (29.46 cm) screen was made available in 2010 and was discontinued end of 2016.

Gain (electronics): In electronics, gain is a measure of the ability of a two-port circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output port by adding energy converted from some power supply to the signal.  It is usually defined as the mean ratio of the signal amplitude or power at the output port to the amplitude or power at the input port.  It is often expressed using the logarithmic decibel (dB) units ("dB gain").  A gain greater than one (greater than zero dB), that is amplification, is the defining property of an active component or circuit, while a passive circuit will have a gain of less than one.

MacBook (Retina): The MacBook is a line of Macintosh portable computers introduced in March 2015 by Apple Inc.  The MacBook has a similar appearance to the MacBook Air, but is thinner and lighter, and is available in colours called space grey, silver, gold, and rose gold.  It offers a high-resolution Retina Display, a Force Touch trackpad, a redesigned keyboard, and only two ports: a headphone jack and a USB 3.1 Type-C port for charging, data transfer and video output.

MacBook family: The MacBook family is a brand of Macintosh laptop computers by Apple Inc. that merged the PowerBook and iBook lines during Apple's transition to Intel processors.  The current lineup consists of the MacBook (2006–2012; 2015–present), the MacBook Air (2008–present), and the MacBook Pro (2006–present).  The MacBook and redesigned MacBook Pro are the only MacBooks that do not incorporate the use of a MagSafe charger, but rather a USB Type-C port.

Remote Install Mac OS X: Remote Install Mac OS X is a remote installer for use with MacBook Air laptops over the network.  It works by having it run on a Macintosh or a Windows-based PC with an optical drive and then connecting over the network to a client MacBook Air (lacking an optical drive) to perform system software installs.

Supporting paragraphs: Micro-DVI MacBook
Answer: iBook G4