Switching keyboard/mouse/monitor problem

Hi.
At home got a Belkin 2 port KVM switch to use between 2 CPUs to share one
keyboard, mouse and monitor. Works like a dream and saves space.
We wanted to use one at work (small office) between a PC and the server.
Problem is we can switch to the PC but not the Server.
Server was using an ordinary keyboard, mouse and monitor so don't know why
it should be different using the switch.
You can get into the Server if you unplug the switch from the PC. Weird?
Any ideas please?
Jen

Switching keyboard/mouse/monitor problem