Expand the USB connections of your computer or notebook, and use all the peripherals you want , recharge devices via usb such as:Bluetooth Headphones, Cell Phones, Mp3, Mp4, Transfer files with high speed, the hub has 4 USB 2.0 ports for you to use as you wish.- 4-Port High Speed USB 2.0 HUB- LED Status Indicator (Accompanies on/off button for USB ports)- Slim size- Compatible with Windows 2000/2003/XP/Vista/7/8 and Mac OS 10 .X or top- Dimensions: 10 x 3.5 x 2.5 cm- 40 cm USB cable;- Data Transfer Rate: 1.5 Mbps/12 Mbps, UP to 480 Mbps- Plug-and-Play: No need to install any Software or Driver.- Individual doors for extra protectionModern and ergonomic design for easy protection