ATEN KH1508A 8-Port Cat 5 KVM Switch with Daisy-Chain Port

The KH1508A differs from the KH1508 in that the A release uses CPU modules with a permanent CAT5 cable molded into a single unit, and the console port now supports any combination of PS/2 and USB keyboards and mice

It allows access to eight directly connected computers, and through a daisy chain connection, an additional 31 KVMs to control a total of 256 computers from a single console.