Jcom1: Serial Port Connector; Jbat1: Clear Cmos (Reset Bios) Jumper - MSI MAG X570S TOMAHAWK MAX WIFI Benutzerhandbuch

JCOM1: Serial Port Connector

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

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 jumper 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.
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Overview of Components
1 DCD
3 SOUT
5 Ground
7 RTS
9 RI
Keep Data
(default)
2 10
1
9
2 SIN
4 DTR
6 DSR
8 CTS
10 No Pin
Clear CMOS/
Reset BIOS