Piedinature - Pinouts
Macintosh Mouse

Available on Macintosh Mac Plus and earlier.

9 PIN D-SUB FEMALE (At the computer)

9 PIN D-SUB MALE (At the mouse cable)

9 PIN D-SUB FEMALE at the computer.
9 PIN D-SUB MALE at the mouse cable.

Pin	Name	Dir	Description
1	CGND	------	Chassis ground
2	+5V	OUT	+5 VDC
3	CGND	------	Chassis ground
4	X2	IN	Horizontal movement line (connected to VIA PB4 line)
5	X1	IN	Horizontal movement line (connected to SCC DCDA-line)
6	n/c	-	Not connected
7	SW-	IN	Mouse button line (connected to VIA PB3)
8	Y2	IN	Vertical movement line (connected to VIA PB5 line)
9	Y1	IN	Vertical movement line (connected to SCC DCDB-line)

Note: Direction is Computer relative Mouse.

Piedinature - PinoutsMacintosh Mouse