USB Connector
USB Micro-A
USB Micro-A is a five-contact plug defined for host-side USB On-The-Go use with compatible Micro-AB receptacles.
Characteristics
| Specification name | USB Micro-A plug |
|---|---|
| Connector family | Micro-USB |
| Connector form | Plug |
| Reversible | No |
| Contact count | 5 |
| USB generation | USB 2.0 / USB On-The-Go |
| Mates with | Micro-AB receptacle |
| Typical role | Host-side connection on an OTG device |
| Current status | Legacy and uncommon; USB-IF stopped certifying USB OTG products effective September 2019, and USB-C has replaced this role on modern dual-role devices |
