PS/2 keyboard pinout

PS/2 connector pinout

Pin Signal In/Out
1 Data Out
2 N/C  
3 Ground  
4 +5V  
5 Clock Out
6 N/C  

About PS/2

Named in honour of IBM PS/2 these sockets today are widely used as standard interfaces for the keyboard and the mouse, but they gradually give up the place USB. For connection of the keyboard the socket of violet color is usually used.

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