Micro USB 2.0 OTG Adapter and Micro SD Card Reader For Computer PC Laptop Smart Phone Using this adapter, you can easily transfer files between your Android smartphone / tablet / computer and SD card, to free up space of your mobile devices, or expand capacity of your devices. Features: 1. Support OTG function. 2. Plug and play, no need drive. 3. Compliant with USB version 2.0 and USB 1.1. 4. Compact design, easy to carry for on the go use. 5. USB bus power supply. No external power supply required. 6. Can be used as ornaments conveniently hung on cellphone. 7. Read / Write data from your smart phone to your micro SD /TF card. 8. Backup photos and data from Micro SD /TF card onto your PC/smart phone. 9. For Samsung Galaxy S3/S4,micro USB OTG smart phone. 10. Support Windows 2000,Windows ME,Windows XP,Vista,Windows 7,Windows 8, MAC or later version. 11. Supports memory cards:T-Flash/Micro SD/Micro SDHC 12. Size:4cm x 1.7cm x 1cm 13. Interface:Micro USB 5-Pin Male&USB 2.0 Male Note: Don't support to read mobile phone to PC directly. Package includes: 1 x Micro USB 2.0 OTG Adapter + Micro SD Card Reader