User`s manual

Hardware Installation
25
2.6.2 PS/2 Mouse and PS/2 Keyboard Ports
PS/2 Mouse
PS/2 Keyboard
The system board is equipped with an onboard PS/2 mouse
(Green) and PS/2 keyboard (Purple) ports - both at location J1 of
the ATX double deck ports of the system board. The PS/2 mouse
port uses IRQ12. If a mouse is not connected to this port, the
system will reserve IRQ12 for other expansion cards.
Warning:
Make sure to turn off your computer prior to connecting or
disconnecting a mouse or keyboard. Failure to do so may
damage the system board.