# Macintosh Mouse

Availble on Macintosh Mac Plus and earlier.

(At the computer)
(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 |  | +5 VDC
3 | CGND |  | Chassis ground
4 | X2 |  | Horizontal movement line (connected to VIA PB4 line)
5 | X1 |  | Horizontal movement line (connected to SCC DCDA-line)
6 | n/c | - | Not connected
7 | SW- |  | Mouse button line (connected to VIA PB3)
8 | Y2 |  | Vertical movement line (connected to VIA PB5 line)
9 | Y1 |  | Vertical movement line (connected to SCC DCDB-line)