Norco ATX-6991, User Manual

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ATX-6991 User's Manual
6
2.4 Jumper Settings
Please refer to following instructions to do jumper settings before installing your hardware
devices.
Remark: How to identify the PIN1 of all jumpers and interfaces: Please observe the word
mark on the side of the plug socket, which will be a “1” or bold line or triangular symbol; And
please look at the back of PCB, each with a square shape will be the PIN 1; and all the jumpers’
PIN1 have a white arrow on the side.
2.4.1 CMOS Clear/Hold Jumper Setting
（
JCC
）
CMOS is powered by the onboard button cell. Clear CMOS will lead to permanent
elimination of previous system settings
（
factory default
）
.
Steps
：（
1
）
Turn off the computer, disconnect power supply
；
（
2
）
Use jumper Cap JCC Pin1-3 short for 5~10 seconds, then restore the default
setting with Pin3-5 connected
；
（
3
）
Start the computer, then press “Del” to enter BIOS setting and reload optimal
defaults
；
（
4
）
Save and Exit.