BCM BC680R, User Manual

Page: 29 / 93

BC680R User’s Manual
BC680R User’s Manual 29
1.6 Jumpers
1.6.1 Clear CMOS (CLCMOS1)
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 cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for
about 5~10 seconds, then move the cap 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 cap on CLRTC
jumper default position. Removing the cap will cause system boot failure!
M.2 M key
M.2 E key
M.2 2242/2280/22110 M Key NVMe (PCIe x4 + SATA III)
M.2 2242/2280/22110 M Key NVMe (PCIe x4 Only)
1 x M.2 2230 E Key with CNVi Support (PCIe x 1 + USB 2.0)
M.2 M key