The ADDERLink X-DVI PRO KVM Extender from Adder extends a system's DVI-D, USB, and audio connections up to 164' (50m) away, letting your computer stay cool, clean, and dust-free while you work in a less-than ideal environment. The X-DVI PRO comes with a transmitter unit, which plugs into your computer's DVI-D, audio, and USB ports, as well as receiver unit that offers four USB 2.0 ports, one 3.5mm audio jack, and one DVI-D port. Both units connect to each other via a CAT 7, 7a, 6a, or 5e cable. Video resolution and distance are based upon on the type of networking cable used.