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© Sealevel Systems, Inc.
RELIO R2 SYNC Manual | SL9255 10/2021
BIOS Considerations
The BIOS functions, features, and settings are fully contained on the COM Express module. Refer to the COM
Express module manufacturer’s website for detailed BIOS settings. A few settings are generally present among
COM Express Modules that can affect functionality.
•
COM Express Type 6 modules have DDIs (Digital Display Interfaces) that can be implemented as
DisplayPort, HDMI, or DVI interfaces. The R2 SYNC carrier board implements DisplayPort only. Ensure DDI1
is set to DisplayPort interface in the BIOS.
Some Passive DisplayPort to DVI adapters have been found which require DDI1 to be set to HDMI/DVI
with the R2 SYNC1004 BIOS. This is the exception, not normal behavior.
1.
Attach a USB keyboard to the computer.
2.
Apply power and immediately press the delete key, repeatedly for 15 seconds. This will ensure the
computer has had time to boot and enter the BIOS.
3.
Press the F9 key to load optimal defaults then press enter to validate the change.
4.
Press the following key pattern:
•
Right arrow,
•
Enter
•
Down arrow 9 times
•
Enter
•
Up arrow
•
Enter
•
F10
•
Enter
5.
If performed properly, the DDI1 setting will have been restored to DisplayPort, the BIOS settings
were saved to flash memory and the computer was rebooted. The display should now be working.
If this does not work, contact Sealevel Systems Technical support.
6.
Once the computer has rebooted and video is working, it is a good idea to disable the LVDS flat
panel interface. It was enabled by restoring “Optimal Defaults”
7.
Enter the BIOS, go to the Graphics section,
and change the “Active LFP” setting to “No LVDS”
8.
Change the “Power Loss Control” setting to “Turn On” (or the setting that is appropriate for your
application environment).
9.
Press F10 to save settings and exit.
“
Power on
after PWR Failure” is a setting present in most BIOS. This setting determines if t
he computer
boots when power is applied. R2 SYNC computers are shipped with this set to always power on
however “Remain Off” and “Last State” are valid settings.
