IEI Integration PCIE-Q350 v1.00 - Manual (Page 145)

PCIE-Q350 PICMG 1.3 CPU Card
Page 123
Disabled Prevents the BIOS from using 32-bit data transfers.
Enabled D EFAULT Allows BIOS to use 32-bit data transfers on supported
hard disk drives.
6.3.3 Super IO Configuration
Use the Super IO Configuration menu (BIOS Menu 6) to set or change the
configurations for the FDD controllers, parallel ports and serial ports.
BIOS Menu 6: Super IO Configuration
Serial Port1 Address [3F8/IRQ4]
Use the Serial Port1 Address option to select the Serial Port 1 base address.