Clear Cmos (Clr_Cmos); At/Atx Power Mode Select (Jp4) - AXIOMTEK eBOX638-842-FL-2 PCI User Manual

3.2.1 Clear CMOS (CLR_CMOS)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the
CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM
data. The onboard button cell battery powers the RAM data in CMOS, which includes system
setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. Move the jumper clip from pins 1-2 (default) to pins 2-3. Keep the clip on pins 2-3 for
about 5~10 seconds and then move the clip back to pins 1-2.
4. Re-install the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data.
Except when clearing the RTC RAM, never remove the clip on this jumper default
position. Removing the clip will cause system boot failure!
Caution
Functions
Normal operation (Default)
Clear CMOS
Note: You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the C.P.R. (CPU Parameter Recall) feature.
Shut down and reboot the system so the BIOS can automatically reset parameter
settings to default values.

3.2.2 AT/ATX Power Mode Select (JP4)

This 3x1-pin p=2.54mm jumper allows you to select AT or ATX power mode.
Functions
ATX mode (Default)
AT mode
Jumper & Connector Settings
eBOX638-842-FL Series User's Manual
Settings
1-2 close
2-3 close
Settings
1-2 close
2-3 close
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