P7 is a Molex 0484060003 Horizontal Mount dual Type A USB connector that provides connectivity to up to two external peripherals. Note the upper connector is port 0 (and the only USB 3.0 port for an MA3 based system). The lower connector is port 1.
| Pin | Description | USB |
| 1 | VUSB1 | 2.0 and 3.0 |
| 2 | USB1- | 2.0 |
| 3 | USB1+ | 2.0 |
| 4 | GND | 2.0 |
| 5 | RX- | 3.0 |
| 6 | RX+ | 3.0 |
| 7 | GND | 3.0 |
| 8 | TX- | 3.0 |
| 9 | TX+ | 3.0 |