9 PIN D-SUB FEMALE at the computer
9 PIN D-SUB MALE at the mouse cable
Available on Macintosh Mac Plus and earlier (Macintosh 128K, 512K, 512K enhanced).
| 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) |
Notes
- Direction is Computer relative Mouse