Amazon.com: Unitek Micro SD card reader adapter with OTG USB 2.0 A male Micro USB B male Connector f
Note: This product can not be used as a transmission line, need to hardware support OTG function of smartphone Specifications - Connector : 1 x USB 2.0 A male ; 1 x Micro USB B male - No driver is required for OTG function - Operating Temperature: 0-70°C ...