The USB Micro-AB receptacle accepts both Micro-A and Micro-B plugs, allowing a device to act as either host (when Micro-A inserted, ID grounded) or device (when Micro-B inserted, ID floating).
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VBUS | +5V power | PWR |
| 2 | D- | Data negative | BUS |
| 3 | D+ | Data positive | BUS |
| 4 | ID | Float=device, GND=host | I/O |
| 5 | GND | Ground | GND |