16-Port Cat 5 High-Density KVM SwitchThe 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. These switches have been designed with unique and powerful features that enable administrators to manage their entire server room and data center devices easily and conveniently.