# Apple Macintosh Mouse Connector

9 PIN D-SUB CONNECTOR

Pin | Name | Description
--- | --- | ---
1 | Ground |
2 | +5V | +5 VDC
3 | GND | Ground
4 | X2 | Horizontal movement line (connected to VIA PB4 line)
5 | X1 | Horizontal movement line (connected to SCC DCDA- line)
6 | ? | ?
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)

Contributor: | Joakim Ögren

Source: | Technote HW19: Pinouts at Apple Technical Notes

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Document last modified: 2002-01-10