Black Box USB 2.0 Extender - CAT5, 1-PortExtend USB 2. 0 peripherals beyond the 16 ft (5 m) limitation up to 328 ft (100 m) over CATx, and power it locally or remotely. Extend a USB peripheral connection beyond the desktop to USB keyboards, mice, printers, webcams, interactive whiteboards, and other devices. The extender receives power locally or remotely, so you have the flexibility to power the extender where it is most convenient for you. Use it, for instance, in industrial control,