USB extender transmits signal through a long distance by a single ethernet cable. Support standard CAT5/5e/6/7 class network wire, adopt the standard Ethernet IEEE-568B connection, and suitable for various operating systems, such as Win8 / Win10 / MAC OS V8.6 etc. /USB extender can transmit USB lossless signals 165ft (50 meters) over Single Cat5/Cat5e/Cat6/Cat7 network cable and achieved stable work. Plug and play, no driver is needed. . , 4-Port USB 2.0 extender has strong compatibility which is compatible with most hard drive enclosures, printers, scanners, webcams and other popular peripherals.And it can be two-way transmission at high speed. Power by Ethernet cable. This usb extender including transmitter and received.Transmitter is powered by UTP port and receiver is powered by lockable DC 5V power adapter, which save the space and avoid complicated steps of wiring