This extension cable actively buffers the incoming and outgoing signals to ensure compliance with the USB 2.0 specification for electrical and timing minimums. This cable is designed for use with most devices like webcams, interactive whiteboards and printers. You can connect up to three extension cables end to end to achieve 118ft total extension. There is an active chip built into the middle of the cable so you can utilize the cable behind a USB wallplate. This cable can also be used when plugged directly into your PC.