Biostar B350GT3 Bios User Manual page 23

Serial Port 1 Configuration
Serial Port
This item enabled or Disabled Serial Port (COM).
Options: Enabled (Default) / Disabled
Change Settings
This item select an optimal settings for Super IO Device.
Options: Auto (Default) / IO=3F8h; IRQ=4 / IO=3F8h; IRQ=3,4,5,6,7,9,10,11,12 /
IO=2F8h; IRQ=3,4,5,6,7,9,10,11,12 / IO=3E8h; IRQ=3,4,5,6,7,9,10,11,12 /
IO=2E8h; IRQ=3,4,5,6,7,9,10,11,12
H/W Monitor
PWM Processor Hot
Options: Enabled (Default) / Disabled
B350GT3 & X370GT3
2. Advanced Menu | 23