Apple IIGS
Monitor Port
 |  |
 |  |
| Pin | Description |
|---|---|
| 1 | Signal ground (Red) |
| 2 | Analog RED with sync |
| 3 | Composite sync |
| 4 | Not Connected |
| 5 | Analog GREEN with sync |
| 6 | Signal ground (Green) |
| 7 | -5V DC |
| 8 | +12V DC |
| 9 | Analog BLUE with sync |
| 10 | Not Connected |
| 11 | Sound 1V peak-to-peak |
| 12 | NTSC/composite color video out |
| 13 | Signal ground (Blue) |
| 14 | Not Connected |
| 15 | Not Connected |