Black Aluminum 7 Ports Hi-Speed USB 3.0 Hub LED Indicator Power Adapter For PC Laptop US PlugDescription: ¡¤100% brand new and high quality.¡¤Quantity:7 ports 7 Switchs¡¤Compliant with USB version:1.1/2.0/3.0 ¡¤Supports High-Speed(5G Mbps)、Full-speed(480Mbps) and Low-speed(12Mbps) USB device profiles¡¤When power adaptor connected、Per-port Over-Curret detection and protection (Excluding power)¡¤When power adaptor connected、Supplies USB bus power(Excluding power)¡¤Every port with independent control swith¡¤Every port has LED power light¡¤Can be driven 500Gmobile hard disk without external power supply¡¤Backflow prevention circuit design、in order to prevent electric current flow back to the device¡¤Automatic switching between self-powered and bus-powered mode Supports Plug&Play¡¤Dimension: 16.5 x 4.7 x 2.1cm(L x W x H)¡¤System requirements: windows XP、 vista、 win7、 Mac OS (10.X or above)¡¤Electric current of the port reach 500mA¡¤Connects to scanners、 printers、 digital cameras、 camcorders、 speakers、 mice、 keyboard、 external drives、 MP3 players and more.¡¤Color:BlackPackage includes: 1pcs * USB 3.0 hub1pcs * Cable(US Plug)