Winten WT-U3H07-BK 7 Port 3.0 USB Hub (12V/3A AC Power Adapter SuperSpeed Hub with 36W Power Adapter)Maximum transfer speed of 5 GB per second Latest VIA VL812 Chipset Adopted, 3.3 feet USB 3.0 Cable,), Backward Compatible with USB 2.0 and Supporting Windows / Mac / Linux OS 1 x input port with 7 x output port 3.0 usb high speed hub Data transfer speed up to 5 Gbps Power supply 12V, 3A (AC adapter) for stable large data transfer Window XP / Vista / 7 / 8 USB-aware Mac system