Question : How do I switch between multiple PC's using a Compaq KVM switch

I missed the instruction on how to switch between multiple PC's using a Compaq KVM switch. As a result, only one of the servers is accessible to me. Our systems administrator is not accessible at this time, hence I am stuck.
Can someone give the various possible keystroke combinations that might enable me to logon to the other servers.

psms

Answer : How do I switch between multiple PC's using a Compaq KVM switch

CTRL Printscreen if I remember well.