Keyboard (5 PC) Connector

(At the computer)

5 PIN DIN 180° (DIN41524) FEMALE at the computer.

Pin	Name	Description	Technical
1	CLOCK	Clock	CLK/CTS, Open-collector
2	DATA	Data	RxD/TxD/RTS, Open-collector
3	n/c	Not connected	Reset on some very old keyboards.
4	GND	Ground
5	VCC	+5 VDC

Keyboard (6 PC) Connector

(At the computer)

6 PIN MINI-DIN FEMALE (PS/2 STYLE) at the computer.

Pin	Name	Dir	Description
1	DATA		Key Data
2	n/c	-	Not connected
3	GND		Gnd
4	VCC		Power , +5 VDC
5	CLK		Clock
6	n/c	-	Not connected

Keyboard (XT) Connector

(At the computer)

5 PIN DIN 180° (DIN41524) FEMALE at the computer.

Pin	Name	Description	Technical
1	CLK	Clock	CLK/CTS, Open-collector
2	DATA	Data	RxD, Open-collector
3	/RESET	Reset
4	GND	Ground
5	VCC	+5 VDC