TRIPP LITE KVM Switch USB Server Interface Unit HD15 USB RJ45, 8 Pack (B078-101-USB-8) Eliminates the need for thicker, heavier KVM cables Compact, lightweight design Plug and Play, no software required No power supply required 8-Pack of B078-101-USB-1 Server Interface Units Needed to connect a USB Server to a B070 / B072-Series Net Commander KVM switch via Cat5e cable Easy to install; no software needed No power supply required Allows a recommended maximum distance of 100ft from KVM to computer/server via Cat5e cable Compact and lightweight design 1-year limited warranty