Connector And Jumper Settings; Software Power-Off Control; Blinking Led In Suspend Mode; Power On By Modem - CHAINTECH 9BJF2 User Manual

Chapter 2

2-3 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 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/ATX12V Power Supply Connector (PW1/PW2)
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
P W 1
supply maintains the system in it's minimum power
state.
Pin Signal Wire
1 COM BLK
The ATX12V power supply has a new +12 V (4-
2 COM BLK
pin) auxiliary power connector. To enable the
3 +12VDC YEL
delivery of more +12 VDC current to the
4 +12VDC YEL
motherboard.
P W 2

Software Power-Off Control

This mainboard can be powered down using theWindows 9x Software Power-Off
function. To power down your computer, click the START button on the Windows 9x
task bar. Select "Shut Down The Computer" and the system turns off. The message "It
is now safe to turn off your computer" will not be shown when using this function.
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. (See Chapter 3)

Blinking LED in Suspend Mode

While in Suspend mode, the LED light on the front panel of your computer will flash.
Suspend mode is entered by pressing the Override Power Button, pushing the Green
button on your ATX case, or enabling the Power Management and Suspend Mode
options in BIOS's Power Management menu. (See Chapter 3)

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.
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