Standard Single Function Ports

Keyboard Port

Keyboard
The keyboard port is a 6 pin Mini-Din port usually referred to as a PS/2 port. The port is designed so the connector can only be inserted one way.
Pins: 6
Transfer Speed: 115Kbps
Maximum Length: 5m

Mouse Port

Mouse
The mouse port is identital to the keyboard port, however they are not interchangeable
Pins: 6
Transfer Speed: 115Kbps
Maximum Length: 5m

Video Graphics Array (VGA)

VGA
VGA is an analogue connector, meaning that the video information is sent as a modulated frequency wave (not 1’s and 0’s). The port is a 15-pin D-subminiature.
Pins: 15
Transfer Speed: Resolution dependent
Maximum Length:30m (low resolution) 7.5m (high resolution)

Digital Video Interface – Digital (DVI-D)

DVI-D
DVI-D is digital
Pins: 24
Transfer Speed: Resolution dependent
Maximum Length: 15m (low resolution) 5m (high resolution)

Digital Video Interface – Analogue (DVI-A)

DVI-A
DVI-A is analogue (direct replacement for VGA)
Pins: 18
Transfer Speed: Resolution dependent
Maximum Length:15m (low resolution) 5m (high resolution)

Digital Video Interface – Interchangable (DVI-I)

DVI-I
DVI-I will accept DVI-A or DVI-D
Pins: 24
Transfer Speed: Resolution dependent
Maximum Length: 15m (low resolution) 5m (high resolution)

Dual Monitor Solution

DMS-59
The DMS-59 (Dual Monitor Solution with 59 pins) is generally used for computer video cards. It provides two DVI or VGA outputs in a single connector. An adapter cable is needed for conversion from DMS-59 (digital) to DVI (digital) or VGA (analog), and different types of adapter cables exist. The connector is four pins high and 15 pins wide, with a single pin missing from the bottom row, in a D-shaped shell, with thumbscrews.

DisplayPort / Min DisplayPort

DisplayPort
The DisplayPort port has a compact 20pin connector and comes in two sizes. It is direct-drive display technology which means that monitors do not require any special circuitry when using it. It supports resolutions of up to 2560 x 1600 and refresh rates of 120Hz. It can be a direct inferface into HDMI. Different version 1.1, 1.2 and 1.3
Pins: 20
Transfer Speed: 8.2Gbits | 17.28Gbits | 32.4Gbits
Maximum Length: 2m

Audio Ports

Audio
Audio input and output accept 3.5m mini audio connectors and are normally colour coded. There is also the S/PDIF which is the Sony/Phillips Digital Interface port.

Modem Ports (RJ-11)

RJ11
Modem ports look identical to female telephone jacks and use a standard two wire RJ-11 cable and connector.
Wires: 2
Transfer Speed: Various
Maximum Length: Almost unlimited

Ehternet Ports (RJ-45)

RJ45
Network Interfaces come in serveral varieties. Most Network Interface Cards (NICs) use an 8 wire RJ-45 port.
Wires: 8
Transfer Speed: Various
Maximum Length: Various

eSATA Ports

eSATA
This is to connect devices such as a hard drive to the computer
Pins: 7
Transfer Speed: 3Gbs
Maximum Length: 3m