The KH1516A KVM switches are control units that allow IT administrators to access and control multiple computers from a single PS/2 or USB KVM console (keyboard, monitor, and mouse). Operators can take control of up to 16 computers. By daisy chaining up to 31 additional switches, as many as 512 computers can be controlled from the original KVM console. 1x KH1516A 16-port Cat 5 High-Density KVM Switch 1x LIN5-04A2-J11G Firmware Upgrade Cable 1x LIN2-481K-E12G Power Cord 1x Rack Mount Kit 1x Foot Pad Set (4 pcs.) 1x User Instructions