Nvidia nForce 680I LT SLI Hardware User Manual page 20

IEEE1394 Header: IEEE1394
These mainboards provide one onboard IEEE1394 port on the back panel of your case. One
additional IEEE1394 header on the mainboard for one more port on the front panel is allowed.
Please connect the header by a cable for use with compatible devices.
IEEE1394
Clear CMOS Jumper: CLR_CMOS
The "Clear CMOS" function is used when you are unable boot your system and need to reset
the BIOS settings (CMOS settings) back to the manufacturer's original settings. This is also a
way to reset the system password if you have forgotten it.
CLR_CMOS
Note: Close stands for putting a jumper cap onto two header pins.
The following steps explain how to reset your CMOS
configurations when you forgot a system password.
1. Turn off your system and disconnect the AC power cable.
2. Set CLR_CMOS header to OFF (1-2 Closed).
3. Wait several seconds.
4. Set CLR_CMOS header to ON (2-3 closed).
5. Connect the AC power cable and turn on your system.
6. Reset your new password.
Pin Assignment
1 TPA+
3 GND
5 TPB+
7 +12V
9 Key
Pin 1-2 Closed
Clear CMOS Data
Pin 2-3 Closed
Normal (Default)
16
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Pin Assignment
2 TPA-
4 GND
6 TPB-
8 +12V
10 GND
Assignment