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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.
VGA
COM1
LAN2
LE1
C
A
UID
BMC
LAN
CTRL
LEDM1
PCH
SXB1
BIOS
LICENSE
CPU1
JF1
CPU2
BT1
LAN1
IPMI_LAN
USB0/1(3.0)
LAN
CTRL
JSD1
JTPM1
I-SATA6
1
JBT1
I-SATA7
JSD2
45
Chapter 2: Installation
JBT1 contact pads
1. Clear CMOS
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