The kh1508a kvm switch is control units that allow it administrators to access and control multiple computers from a single ps2 or usb kvm console operators can take control of up to 8 computers by daisy chaining up to 31 additional switches as many as 256 computers can be controlled from the original kvm console this switch has been designed with unique and powerful features that enable administrators to manage their entire server room and data center devices easily and conveniently for