USB interface support USB devices such as USB flash disk, USB mouse, USB keyboard and etc. Suitable but not limited for Galaxy S2, Galaxy Note, Galaxy S3/S4, Galaxy Tab3 8.0, Xperla NX-02D, Xperla acro HDIS12S. REGZA Phone-TO1D, and S-series Draws only from OTG port, current for USB devices is limited to capability With USB2.0 4-Port Hub, for Mouse, Keyboard, U disk, Camera, Printer and so on. Easy plug and play installation device, no external needed No driver needed for Android and PC with USB Supports supply extra through -USB port if necessary.(Please take note: Extra only charge for accessories such as mouse keyboard etc,can not charge for smartphone or ) Colour: Black material: plastic Size: 20cm Package Contents: 1 * -USB cable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.