OTG USB Micro SD/TF Card Reader 2 in 1 USB Micro SD/TF Card Reader OTG Features: Color: Blue, red, green Material: Aluminium Interface USB 2.0 Supports Card Type TF Max. Memory Supported 64G Slot Number: 1 Support card quantity simultaneously: 1 Transmission Rate: 480Mbps Supports System: Android 2.x , Android 4.x , Win 2008 , Win vista , Win7 32 , Win7 64 Put the micro SD into the card slot; Insert the micro USB into the smart phone & PAD; Insert the USB into the computer Dimensions: 2.17 in x 0.79 in x 0.28 in (5.5 cm x 2 cm x 0.7 cm) Weight: 0.32 oz (9 g) Packing List 1 x Card reader