Connector And Jumper Settings; Power On By Modem; Poly-Fuse Over Current Protection; Cn12 Atx Power Supply Connector - CHAINTECH 6OJA3 Manual

Chapter 2

2-4 Connector and Jumper Settings

Connectors are used to link the system board with other parts of the system, including
the power supply, the keyboard, and the various controllers on the front panel of
the system case.
The power supply connector is the last connection to be made while installing
a mainboard. Before connecting the power supply, please make sure it is not
connected to the power source.
ATX Power Supply Connector
Power-On By Modem
While in Soft-off state, if an external modem ring-up signal occurs, the system wakes
up and can be remotely accessed. You may enable this function in BIOS's Power
Management Setup menu.

Poly-fuse Over Current Protection

The poly-fuse protects the system from dangerous voltages the system might be
exposed to via the keyboard or USB connectors. In case of such exposure, the poly-
fuse will immediately be disconnected from the circuit, just like a normal fuse. After
being disconnected for a certain period of time, the poly-fuse will return to its normal
state, after which the keyboard or USB can function properly again. Unlike
conventional fuses, the poly-fuse does not have to be replaced, relieving the user
wasted time and inconvenience.
12
(CN12)
The power cord leading from the system's power
supply to the external power source must be the
very last part connected when assembling a system.
To support this function, a switching power
supply with a minimum of 750mA 5VSB
is required.
The ATX power supply provides a single 20-pin
connector interface which incorporates standard +/
-5V, +/-12V, optional 3.3V and Soft-power signals.
The Soft-power signal, a 5V trickle supply is
continuously supplied when AC power is
available. When the system is in the Soft-Off
mode, this trickle supply maintains the system in
it's minimum power state.