From Dustin Graham, Mon Oct 16 15:26:27 2006
Just sending a reminder about working on PS/2 devices: when you connect or disconnect PS/2 devices, the workstation must be powered off. If PS/2 devices are added or removed on a workstation that is powered on, it is possible to burn out the PS/2 controller on the workstation motherboard. We only use keyboards and mice on this interface, which can be identified by its round plugs.