USB Adapter
USB OTG Adapters
USB OTG adapters let supported portable devices act as USB hosts for compatible peripherals.
USB OTG adapter characteristics
Compare host support, common peripherals, and power requirements.
| Purpose | Let a supported portable device communicate directly with selected USB peripherals |
|---|---|
| Common legacy connector | Micro-USB OTG |
| Host capability | Must be supported by the phone, tablet, or other portable device |
| Typical peripherals | Flash drives, keyboards, mice, controllers, card readers, and some audio devices |
| Power consideration | The portable host may not supply enough power for every peripheral |
| Modern USB-C note | USB-C uses newer role and configuration mechanisms, although products may still market simple host adapters as OTG |
Sources: USB-IF USB On-The-Go and Embedded Host, USB-IF OTG and Embedded Host Supplement for USB 3.0, and USB-IF USB 2.0 Specification.