MHL OTG USB HUB Card reader Adapter for Galaxy S3/S4/Note2/Note3 This product is with USB OTG and MHL function for mobile phone design.Small adapter to your Smart phone video,picture output to HDTVs,Monitors,Projectors play.Read anywhere at any time of USB flash disk,SD/TF/M2 memory cards.Video,images,and on the document copying,delete operation.Make difference user experience. Micro-11p USB connector suitable for galaxy S3/S4/Note2/Note3. Support USB2.0 host to connect USB disk,mouse,keyboard. Support MHL to HDMI output to HDTV. Through the micro usb power supply to the products.