The USB 2.0 internal motherboard header is a 9-pin (2x5 minus one key pin) 2.54mm pitch header providing two USB 2.0 ports. Used to connect front panel USB ports and internal USB 2.0 devices.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VCC | +5V power port 1 | PWR |
| 2 | VCC | +5V power port 2 | PWR |
| 3 | D- | Data negative port 1 | BUS |
| 4 | D- | Data negative port 2 | BUS |
| 5 | D+ | Data positive port 1 | BUS |
| 6 | D+ | Data positive port 2 | BUS |
| 7 | GND | Ground port 1 | GND |
| 8 | GND | Ground port 2 | GND |
| 9 | KEY | Key pin missing | I/O |
The USB 2.0 internal motherboard header is a 9-pin (2×5 minus one key pin) 2.54mm pitch header providing two USB 2.0 ports. Used to connect front panel USB ports and internal USB 2.0 devices.