MSI X58 Platinum Series User Manual page 54

AHCI CD/DVD Boot Time out
Select the waiting time for the AHCI CD/ DVD when booting.
AHCI Port 1/2/3/4/5/6
Press <Enter> to enter the sub-menu.
AHCI Port 1/2/3/4/5/6
Select the type of device.
I/O Device
Press <Enter> to enter the sub-menu and the following screen appears:
COM Port 1
Select an address and corresponding interrupt for the first serial port.
BIOS Setup
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