excellent 4Ports USB 3.0 Hub with On/Off Switch+US AC Power Adapter PC Laptop Description: 1.Hub Size: Approx.10.3 X 3.5 X 2.3cm(L X W X H) 2.Color: Black 3.Cable Length: Approx.52.3cm 4.Plug Type: US Plug 5.Input: 100-240V/AC 50/60Hz 150mA 6.Output: 5.0V   Features: 1.SuperSpeed USB 3.0 ports to your computer with this 7-port hub 2.Each port has an individual power switch and a blue LED power indicator 3.This bus powered hub will support up to 900mA of current 4.4-Port SuperSpeed USB 3.0 Hub supports data transfer rates of up to 5Gb/s 5.Plug and play. No drivers needed. Compatible with Windows, Mac, and Linux 6.Each port has a power switch and LED power indicator 7.Voltage and current overload protection will protect the hub and connected devices 8.Detachable tangle-free 52.3cm USB 3.0 cable   Included 1 X USB 3.0 4 Ports Hub 1 X AC Adapter (US PLUG) 1 X USB 3.0 Cable