Supermicro A3SEV-2C-LN4 User Manual page 46

Super A3SEV-2C/4C-LN4 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.
MH1
VGA
AUDIO FP JPL4
JPL4:
1-2:ENABLE
2-3:DISABLE
JPAC1
JEDP1
JSMB1
U2
JSIM1
JMD2_SRW1
19
30
JMD1 JMD2
M.2-H PCI-E 3.0 X2/I-SATA0 M.2-P PCI-E 3.0 X1
USB2/3
19
USB4/5
BT1
JGP1
I-SATA1
2
LED2
JTPM1
JBT1 contact pads
USB0/1 USB6/7(3.1)
LAN3/4 LAN1/2
CPU
1
JBT1
JPME2
A3SEV-2C-LN4
JPME2:
1-2:NORMAL
2-3:ME MANUFACTURING MODE
BAR CODE REV:1.00
DESIGNED IN USA
DIMMA1
DIMMB1
JSD1
SATA DOM POWER
JF1
PWR NIC NIC HDD PWR
RST X OH/FF
ON 2 1 L D E L D E
46
1. CMOS Clear
HDMI/DP
MH2
2
JITP1
59
BIOS LICENSE
2
JPV1
FAN1
MH4