USB Micro-A is the host-side OTG connector in the micro form factor. It has one flat side (asymmetric) and grounds the ID pin to identify host role. Used on OTG cables and some older Android devices.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VBUS | +5V power | PWR |
| 2 | D- | Data negative | BUS |
| 3 | D+ | Data positive | BUS |
| 4 | ID | Grounded = host mode | GND |
| 5 | GND | Ground | GND |
USB Micro-A is the host-side OTG connector in the micro form factor. It has one flat side (asymmetric) and grounds the ID pin to identify host role. Used on OTG cables and some older Android devices.