ITEM NAME:4in1 Smart Mini OTG TF SD Slot Card Reader Adapter with Micro USB Charge Port 4in1 Smart Mini OTG TF SD Slot Card Reader Adapter with Micro USB Charge Port SPECIFICATIONS.(Compatible With: fit for device with OTG functions. Connector Female: USB 2.0/SD Card slot/TF Card slot/Micro USB. Item included: 1 x card reader. Connector Male: Micro USB. 1) Compact and lightweight, easy to carry.