This short USB OTG cable is used to connect devices like mouse, keyboard, pendrive, external hard disk (external power required), etc with Samsung Galaxy S2, S3, S4, Micormax A116, A110, Sony Xperia Z, U, P Nokia N8, C6-01, C7, Oro, E6, E7, X7, 603, 701 and 808 Pureview and many Tablets. PLEASE NOTE this is not an exclusive list. It may also work with unlisted devices provided proper OTG drivers are available for the device. One side has Micro-B plug and other side has Standard-A receptacle.