Jbat1: Clear Cmos (Reset Bios) Jumper; Jcom1: Serial Port Connector; Jrgb1: Rgb Led Connector - MSI PRO B660M-A CEC WIFI User Manual

JBAT1: Clear CMOS (Reset BIOS) Jumper

There is CMOS memory onboard that is external powered from a battery located on
the motherboard to save system configuration data. If you want to clear the system
configuration, set the jumpers to clear the CMOS memory.
Resetting BIOS to default values
1. Power off the computer and unplug the power cord.
2. Use a jumper cap to short JBAT1 for about 5-10 seconds.
3. Remove the jumper cap from JBAT1.
4. Plug the power cord and power on the computer.

JCOM1: Serial Port Connector

This connector allows you to connect the optional serial port with bracket.
2
1

JRGB1: RGB LED connector

The JRGB connector allows you to connect the 5050 RGB LED strips 12V.
1
⚠
Important
The JRGB connector supports up to 2 meters continuous 5050 RGB LED strips
∙
(12V/G/R/B) with the maximum power rating of 3A (12V).
Always turn off the power supply and unplug the power cord from the power outlet
∙
before installing or removing the RGB LED strip.
Please use MSI's software to control the extended LED strip.
∙
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Clear CMOS/
Reset BIOS
DCD 2
SOUT 4
Ground 6
RTS 8
RI 10
+12V 2
R 4
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SIN
DTR
DSR
CTS
No Pin
G
B