WIDE COMPATIBLE—-90 Degree Left Angled Micro USB 2.0 OTG Host Adapter with USB Power Supply for Android, Windows and Other Systems MICRO USB PORT—-This adapter is with USB interface, you can connect charger or USB devices, such as mouse, keyboard, external USB card reader, U disk and mobile hard disk MOBILE MICRO USB POWER SUPPLY —- USB disk external power. This host adapter has an extra micro USB power connector so that you can charge your phone while you use your phone as an OTG device TO WORK MORE EFFICIENTLY —- Connect USB accessories to your OTG mobile devices and download images/transfer data, which can help you work more efficiently. And it can plug and play OTG FUNCTION —- High speed cable OTG function can save a lot of space, no wires for disasters