Chapter 2
7NJS User’s Guide
13
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.
Chapter 2
14
7NJS User’s Guide
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.)
C. G-BTN/G-LED (Green Button Switch/LED Connector):
Some ATX cases provide a Green button switch, which is used to put the
system in Suspend mode. In Suspend mode, the power supply to the system is
reduced to a trickle, the CPU clock is stopped, and the CPU core is in its
minimum power state. The system is woken up whenever the keyboard or
mouse is touched. The system resumes in different ways as defined by Power
Management Setup screen in BIOS.
PS:
For Green LED connector please refer to Section 2.7 CBOX™ 2
D. RESET (System Reset Switch Connector):
This connector should be connected to the reset switch on the front panel of
the system case. The reset switch allows you to restart the system without
turning the power off.
E. SPEAKER (Speaker Connector):
This 4-pin connector connects to the case-mounted speaker
F. HD-LED (IDE Activity LED Connector):
The IDE activity LED lights up whenever the system reads/writes to the IDE
devices.
FD1 (Floppy Disk Connector)
This connector is used to connect 34 pins of Floppy.
