User`s guide

16 • Connectors
3.6 PS-ON Switch
If you use ATX power supply and have connectted a 4-pin ATX cable to
backplane, the PS-ON switch will be active. A two pin cable connects to the
chassis power switch.
The system power is controlled by a momentary switch connected to this
lead. Pushing the button once will switch the system between ON and
SLEEP. Pushing the switch while in the ON mode will turn the system off.
3.7 KEY Lock Connector
Connector for a keyboard lock.
KeyLock Connector
PS-ON switch