Micro public to USB female OTG power adapterOperating instructionsThe phone needs to support OTG function in order to be able to use the tested USB keyboard and USB flash drive. The external USB power supply of the mobile hard drive can also be used for phones with micro us OTG interface, tablets, MIDUMPC, and e-books for OTG transfer function.take care1: Charging OTG phones or tablets is not supported (Power supply function only provides power to external devices) 2: Mobile tablets with 0TG function can be connected through this adapter cable3: USB portable drive requires external power supply4: Connect to a mobile hard drive. If there is another USB drive without a micro USB power interface, please click: With a micro USB power interface, currently all OTGs cannot charge phones or tablets. Charging is not supported, but only for external devicesProduct Name: Micro Public to USB Female OTG Power Supply AdapterVoltage: 5V@2AMaterial: aluminum alloy+PVCTransmission rate: 480MbpsInterface: Micro input/USB-A outputFunction: Data Transmission 2.0Packaging includes1 * OTG adapter