Supermicro X11DAC User Manual page 58

Super X11DAC User's Manual
CMOS Clear
JBT1 is used to clear CMOS, which will also clear any passwords. Instead of pins, this jumper
consists of contact pads to prevent accidentally clearing the contents of CMOS.
To Clear CMOS
1. First power down the system and unplug the power cord(s).
2. Remove the cover of the chassis to access the motherboard.
3. Remove the onboard battery from the motherboard.
4. Short the CMOS pads with a metal object such as a small screwdriver for at least four
seconds.
5. Remove the screwdriver (or shorting device).
6. Replace the cover, reconnect the power cord(s), and power on the system.
Note: Clearing CMOS will also clear all passwords.
Do not use the PW_ON connector to clear CMOS.
BMC
JA1
BIOS LICENSE
PCH
1
JBT1
JPS1
SAS Controller Chip
SAS4~7 SAS0~3
USB3~4 LAN1/2 JAUDIO1
X11DAC
REV:1.00
DESIGNED IN USA
Battery
CPU2
P2 DIMM A2
MAC CODE
SAS CODE
MAC CODE
CPU1
58
USB1~2/
PS2
VGA
1. Clear CMOS
JPI2C1
JF1
LE2
FAN2 FAN1
JBT1 contact pads