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PS/2 Port

Pin No. Signal Name
1 Data
2 Reserved
3 Ground
4 +5 Volts
5 Clock
6 Reserved
PS/2 Pinout


Mouse data packets or keyboard scan codes are sent from the mouse or keyboard to the computer on this single wire serially.


This signal is sent from the mouse or keyboard to synchronize the data signal.

+5 Vdc

This is a simple 5 volts signal for giving power to the mouse or keyboard.


This is a common ground signal used as a return path for data and is a reference to logical 0.