OTG Adapter, SNANSHI Micro USB OTG Charge HUB Cable for Laptop Smartphone Table Compatible with all tablets and cellphones with OTG function, such as for Samsung Galaxy S3/S4/Tab 3,2 ,Note 10.1 and so on Three ports with USB design can connect the keyboard,mouse,card reader,and so on.(can't connect hard disk) OTG port provides a simple way to connect phone to a USB capable computer for data synchronization and file transfers. (Switch on "Otg") Support data synchronize when charging For Galaxy S4 , Note 3 (Switch on "Charge") Color: Black | Length: 20cm