[4-ports at Same Time]:This USB hub can easily expand one of your computer's USB ports into four port(Does not support charging). Support 4 ports to work at the same time, without any pressure, and keep the temperature in the middle range. Plug and play, no need driver, easy to use. [Wide Appliaction]: This 4-port USB expander applies to various devices: laptop, pc tower, , , flash drive, keyboard, mouse, card reader, HDD, cellphone OTG adapter, printer, camera, USB fan and USB cables. [SuperSpeed Transmission]:With high efficient USB3.0, 4-port USB splitter provides 5 Gbps stable data transfer and is compatible with 2.0/1.0. It is fast enough to transfer an HD movie in seconds. [Individual LED lit Power Switches]:Blue low-light indicator light, faint and not dazzling, and it is controlled by a separate key switch. Press the button, the indicator lights up, and the USB interface is powered on. [user-friendly design]:1.4cm ultra slim body, small, convenient and beautiful. The user-friendly design takes into account the size of most flash drives on the market and the space between each USB port. Insert 4 flash drives at the same time without worrying . Colour:black Material:plastic Size:Cable length: 15cm Package Contents: 1 x usb hub switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.