The UU150-4 is a USB 1.1 over Category 5/5e/6 USB extender with a 4-port Hub built into the remote unit. The kit includes a local unit and a remote unit. The local unit comes with a short cable that is used to plug into the USB port of any PC. The remote unit connects to the local unit via cat5 cable that can be upto 150 ft long. Neither side requires a power supply, though the remote unit has the option for plugging in a separate supply if the USB devices require too much power. The unit is compatible with most USB devices such as USB Cameras, printers, scanners, etc. The unit is a simple plug-and-play device which does not require any special software.