Connector - Macintosh MouseAvailable on Macintosh Mac Plus and earlier.9 PIN D-SUB FEMALE at the computer. 9 PIN D-SUB MALE at the mouse cable.  | (at the computer) |  | (at the mouse cable) |
Pin | Name | Direction | Description |
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1 | CGND | --- | Chassis ground | 2 | +5V | Output | +5 VDC | 3 | CGND | --- | Chassis ground | 4 | X2 | Input | Horizontal movement line (connected to VIA PB4 line) | 5 | X1 | Input | Horizontal movement line (connected to SCC DCDA-line) | 6 | n/c | --- | Not connected | 7 | SW- | Input | Mouse button line (connected to VIA PB3) | 8 | Y2 | Input | Vertical movement line (connected to VIA PB5 line) | 9 | Y1 | Input | Vertical movement line (connected to SCC DCDB-line) |
Note: Direction is Computer relative Mouse.
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