mbeat Micro USB Card Reader & Hub For Android
Pocket Sized Micro USB Card Reader and Hub with Tuck-away Cable. Supports USB On-the-Go Technology for Android Smartphones & Tablets
What is USB OTG(On-the-Go) ?
USB OTG is a specification that allows USB devices such as a tablet or smartphone to act as a host, allowing other USB devices such as USB flash drives, mice or a keyboard to be attached to them.