Chapter 2
7NJL1 User’s Guide
13
2.5 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
motherboard. Before connecting the power supply, please make sure it is not
connected to the power source.
Note
:
All cables are
security-proof
.
PW1 (ATX Power Supply Connector):
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. The ATX
power supply provides a single 20-pin connector interface, which incorporates
st/-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 its minimum power state.
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 section
3.5
)
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 section
3.5
)
Chapter 2
14
7NJL1 User’s Guide
Poly-fuse Over Current Protection:
The poly-fuse protects the system from dangerous voltages that the system
might be exposed to via the keyboard or USB connector. 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. Then the keyboard or USB connector
can function properly again. Unlike conventional fuses, the poly-fuse does not
have to be replaced, relieving the user wasted time and inconvenience.
CN1A (Front Panel Connector) A through F:
A. PWR-SW (Over-ride Power Button Connector):
The power button on the ATX chassis can be used as a normal power switch
as well as a device to activate Advanced Power Management Suspend mode.
This mode is used for saving electricity when the computer is not in use for
long periods of time. The Soft-OFF by PWR-BTN function in BIOS's Power
Management Setup menu must be set to [
Delay 4 Sec
.] to activate this function.
When the Soft-OFF by PWR-BTN function is enabled, pushing the power
button rapidly will switch the system to Suspend mode. Any occurrence of
external activities such as pressing a key on the keyboard or moving the mouse
will bring the system back to Full-On. Pushing the button while in Full-On
mode for more than [
4 seconds
] will switch the system completely off. See
Over-ride Power Button Operation diagram.
B. P-LED (Power LED Connector):
The power indicator LED shows the system's power status. It is important to
pay attention to the correct cables and pin orientation (i.e., not to reverse the
order of these two connectors.)
