Yeworth Micro USB Card Reader, 4in1 Micro-USB OTG/TF/SD Smart Card Reader Adapter with Micro-USB Charging Port for Android/Smartphone/Tablet/Samsung Galaxy S6/ S6 Edge Suitable but not limited for Samsung Galaxy S3/S4/S5/NOTE2/3/4,Samsung Galaxy Note , Sony Xperia NXSO-02D,Sony Xperia acro HDIS 12S,Toshiba REGZA Phone T-01D,and Sony S-series Tablet. Supports read/writte large capacity SD(HC)/TF/MMC memory cards. USB interface support USB devices such as USB flash disk,USB mouse,USB Keyboard and etc. Support OTG function with Micro USB interface all tablets. The LED lights when it works.