Jaud1: front audio connector, Jcom1: serial port connector, Jbat1: clear cmos (reset bios) jumper – MSI B450M-A PRO MAX AM4 Micro-ATX Motherboard User Manual
Page 17
17
Overview of Components
Overview of Components
JAUD1: Front Audio Connector
This connector allow you to connect audio jacks on the front panel.
1
2
10
9
1
MIC L
2
Ground
3
MIC R
4
NC
5
Head Phone R
6
MIC Detection
7
SENSE_SEND
8
No Pin
9
Head Phone L
10
Head Phone Detection
JCOM1: Serial Port Connector
This connector allows you to connect the optional serial port with bracket.
1
2
10
9
1
DCD
2
SIN
3
SOUT
4
DTR
5
Ground
6
DSR
7
RTS
8
CTS
9
RI
10
No Pin
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.
Keep Data
(default)
Clear CMOS/ Reset
BIOS
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.
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