Aaeon SBC-551 Manual page 73

IDE Burst Mode
When this item is Enabled, the system will support burst data
transfer mode to increase HDD transfer speed.
IDE Data Port Post Write
This item allows users to select Enabled to use data port post write
for IDE drive.
IDE HDD Block Mode
Set this item to Enable to use HDD block transfer mode.
Onboard FDD Controller
Enables or Disables the onboard Floppy Drive controllers.
Onboard Serial Port 1 & 2
You can set the I/O address for serial ports 1/2. The system will
auto-detect the COM port address when this item set to Auto.
3F8/IRQ4 (default for port 1)
2F8/IRQ3 (default for port 2)
3E8/IRQ4
2E8/IRQ3
IR Address Select
The address of the IR port can be changed from Disabled, 2E8H,
3E8H, 2F8H, to 3F8H.
IR Mode
The IR mode can be either set to HPSIR or ASKSIR.
IR IRQ Select
The user can manually set the IRQ of the IR port.
Chapter 3 Award BIOS Setup 65