... 5V@4A DC Power Supply Max 900mA output per port Welcome OEM,OEM MOQ:50pcs USB 3.0 Super ... Speed 4 Port HUB DEAR CUSTOMERThank you for purchasing this product. For ... 0 IntroductionThis is a USB 3.0 Super Speed 4 Port HUB designed for connecting four USB devices from a ... 3.0 cable is required.5. Max 900mA output per port.6.Supports OS:Window Vista, Window XP, Window Me, ...