Turn a single USB port into 7 USB 2.0 ports. Transfer your data at up to 480Mbps. Easy installation with plug and play convenience. Work seamlessly with all your USB 2.0 and USB 1.1 devices. Support hot swapping. ON/OFF button available. Lower power supply consumption for longer battery life. Make power supply optional in laptop applications. Feature over current detection and safety. Lightweight and compact design is perfect for travel. Compatible with Win98, Win2000, Win ME, Win XP, Win7 and Vista; Mac OS X V10.3 and higher.