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PS/2 (Personal System/2) Port

PS/2 (Personal System/2) Port

The PS/2 (Personal System/2) Port, also referred to as the mouse port or keyboard port, was developed by IBM. It is used to connect a computer mouse or keyboard to an IBM compatible computer. The PS/2 port is a mini DIN plug that contains six pins and is still sometimes found on all IBM compatible computers.

PS/2

PS/2 Mouse Cable

6 pin PS/2 specifications

Pin	Voltage	Assignment
1	+2.0 to +5.5v	Keyboard Data
2	+4.8 to +5.5v	Reserved
3	Ground	Ground
4	+2.0 to +5.5v	+2.0 to +5.5v
5	+2.0 to +5.5v	Keyboard Clock
6	+2.0 to +5.5v	Reserved

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