ATX power connector on the motherboard consists of two rows of 12 pins.
This schematic allows to connect a ATX Motherboard Power - 24 Pin (ver. 2.x) on a ATX Motherboard Power - 24 Pin - Compaq/HP.
| Color | Pin PS | Pins MB | Name | Description | Color | Pin PS | Pin MB | Name | Description |
|---|---|---|---|---|---|---|---|---|---|
| orange | 1 | 1, 13 | +3.3 VDC | Power +3.3V | orange | 13 | 20, 23 | +3.3 VDC | Power +3.3V |
| orange | 2 | 2 | +3.3 VDC | Power +3.3V | blue | 14 | 14 | -12 VDC | Power -12V |
| black | 3 | 3 | GND | Ground | black | 15 | 15 | GND | Ground |
| red | 4 | 4 | +5 VDC | Power +5V | green | 16 | 16 | PS-ON | Remote Power ON/OFF |
| black | 5 | 5 | GND | Ground | black | 17 | 17 | GND | Ground |
| red | 6 | 6 | +5 VDC | Power +5V | black | 18 | 18 | GND | Ground |
| black | 7 | 7 | GND | Ground | black | 19 | 19 | GND | Ground |
| grey | 8 | PWROK | Power Good | 20 | 8 | ||||
| purple | 9 | 9 | +5 VSB | +5V Standby | red | 21 | 21 | +5 VDC | Power +5V |
| yellow | 10 | 10 | +12 VDC | Power +12V | red | 22 | 22 | +5 VDC | Power +5V |
| yellow | 11 | +12 VDC | Power +12V | red | 23 | 12 | +5 VDC | Power +5V | |
| orange | 12 | 11 | +3.3 VDC | Power +3.3V | black | 24 | 24 | GND | Ground |