Recent Apple Video Output Ports

Laptops have continued to evolve, with ports being reduced in size while increasing flexibility in connections to peripherals. In the area of external video output, the last 5 years have seen many changes. In that period of time, Apple in particular has introduced and used the DVI, Mini-DVI, Micro-DVI, DisplayPort and the Mini DisplayPort to interface with video devices.

The Mini-VGA connector and port was used on laptops and other systems in place of the standard and larger VGA connector. Apple and Hewlett Packard have separate implementations using the same Mini-VGA name. Mini-VGA ports have the ability to output composite and S-Video in addition to VGA signals. The Mini-VGA port was used on Apple’s iBooks, eMacs, early PowerBooks, and some iMacs (notably the iMac G5).

The Mini-DVI connector is used on Apple computers as a digital alternative to the Mini-VGA connector. The Mini-DVI port and connector were replaced in October 2008 by the Mini DisplayPort. The Mini-DVI port was introduced on the PowerBook G4, Intel iMac, MacBook laptops, 2009 MacMini, and even the Intel XServe. The Mini-DVI connector is capable of carrying DVI, VGA, or TV signals with the use of adapters.

The Micro-DVI port is a video connection port used by the Asus U2E PC and Apple MacBook Air in 2008, which is smaller that the Mini-DVI port used by other Apple MacBook models. There are a range of adapters. The Micro-DVI to DVI adapter is digital-only and is incompatible with DVI-I and DVI-A connectors as it omits the analog pins. Apple shipped a DVI and VGA adapter. The Micro-DVI port was replaced with the Mini DisplayPort.

The Mini DisplayPort is a miniaturized version of the DisplayPort interface that is used by the latest Apple MacBook Pro and iMac series of computers. The Mini DisplayPort is capable of displaying higher resolutions than the preceding port types, allowing for up to 2560×1600 pixel 30-inch displays. With a suitable adapter, Mini DisplayPort may be used on displays with VGA, DVI, or HDMI interfaces. In 2009, VESA (the Video Electronics Standards Association) announced that Mini DisplayPort would be included in their formal DisplayPort 1.2 specification and the connector would be licensed with no fee from Apple.

The Mini DisplayPort specification includes High Bandwidth Digital Content Protection, allowing content providers to disable playback on external displays that are not compliant. Mini DisplayPort adapters do not exist for the older component video, S-Video, or composite video connectors.

If you have several models of Apple computers, you can find that the number of video port adapters can be confusing. With this short article and diagrams, I hope you can match up the Macintosh models you own with the correct adapters for connection to monitors and projectors.