The USB OTG card reader have one Micro USB plug and one USB plug for connection. It supports data transfer and read for SD card and Micro SD card. Compact and lightweight, easy for you to carry for different use. High speed reading and transferring, suitable for Android mobile phone which supports OTG function, normal laptops and computers. Item Name: USB OTG Card Reader Material: ABS Interface: USB + Micro USB for Android Phone and Computer Function: SD/Micro SD Card Reading + OTG Support System: for Windows 7/8/Vista Features: Portable, Multifunctional, High Speed, Phone/Computer Accessories Size: 64mm x 89mm x 9mm/2.52" x 3.50" x 0.35" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x USB OTG Card Reader (Others Not Included)