Apple Macintosh External Drive
From HwB
Pinout
19 PIN D-SUB CONNECTOR
| Pin | Name | Description |
|---|---|---|
| 1 | Ground | |
| 2 | Ground | |
| 3 | Ground | |
| 4 | Ground | |
| 5 | -12V | -12 VDC |
| 6 | +5V | +5 VDC |
| 7 | +12V | +12 VDC |
| 8 | +12V | +12 VDC |
| 9 | ? | ? |
| 10 | PWM | Regulates speed of the drive |
| 11 | PH0 | Control line to send commands to the drive |
| 12 | PH1 | Control line to send commands to the drive |
| 13 | PH2 | Control line to send commands to the drive |
| 14 | PH3 | Control line to send commands to the drive |
| 15 | WrReq- | Turns on the ability to write data to the drive |
| 16 | HdSel | Control line to send commands to the drive |
| 17 | Enbl2- | Enables the Rd line (else Rd is tri-stated) |
| 18 | Rd | Data actually read from the drive |
| 19 | Wr | Data actually written to the drive |