4 Port USB Powerd HUB with it's own 5V 3A US power adapter it can charge your phone even if the computer is off. It's will transfer rates up to 5Gbps (500MBps) to allow data to move quickly between devices. 1 Smart Charging Port(Max. 2.4A ) at the bottom for charging your phone/tablet/camera etc recognise your device automatically and provides a corresponding current.
USB 3.0 cable length: 100 cm / 39 inches long enough and can be connected to the back USB 3.0 port of the desktopSleek piano black glossy UV clear coat finish designed with Individual On/Off Port. If you want to turn off one of this 4 port just need press and hold the switch button on about 3 seconds.
Turn on the usb port: tap the buttonSmart USB 3.0 hub it will remember which ports are switched on or off when powered down and keep that config at power up. No drivers required compatible with Windows XP / Vista / 7 / 8 / 8.1 / 10 / 10.1 Mac OS X 10.2 or above Linux 9 or aboveSolid construction built-in surge protection and over-current protection along with industrial-grade 5mm hardened cable endure years of use.
NOTE: If the hub does not work it may be caused by unstable voltage you can try to disconnect the power adapter