Here are some useful accessories brought to you by Enter. The highly-functional 4 and 7 port USB hub serial cards and host cards will make your working experience better than before. Be quick in picking the one you need and comfortably suffice your daily computer related works.Key Features:System feature Turns a single USB port into 7 USB 2.0 portsTransfers data at upto 480MbpsInstalls easily with plug and play convenienceWorks seamlessly with all USB 1.1 and USB 2.0 devicesSupports ''hot swapping'' of all USB devicesLowest power consumption for longer battery lifeMakes power supply optional in laptop applicationslets your monitor port and power status with LEDsfeatures over-current detection and safetyOffers lightweight compact design-perfect for travel