MSI B450-A PRO User Manual - Page 36
JLPT1: Parallel Port Connector, JBAT1: Clear CMOS (Reset BIOS) Jumper
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JLPT1: Parallel Port Connector This connector allows you to connect the optional parallel port with bracket. 2 26 1 25 1 RSTB# 2 AFD# 3 PRND0 4 ERR# 5 PRND1 6 PINIT# 7 PRND2 8 LPT_SLIN# 9 PRND3 10 Ground 11 PRND4 12 Ground 13 PRND5 14 Ground 15 PRND6 16 Ground 17 PRND7 18 Ground 19 ACK# 20 Ground 21 BUSY 22 Ground 23 PE 24 Ground 25 SLCT 26 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 jumper 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. 36 Overview of Components