Frequently Asked Questions - Supermicro H12SSG-AN6 User Manual

3.3 Frequently Asked Questions

Question: What type of memory does my motherboard support?
Answer: The H12SSG-AN6 motherboard supports up to 2TB registered ECC DDR4 up to
3200MHz memory in eight slots. See Section 2.4 for details on installing memory.
Question: How do I update my BIOS?
Answer: It is recommended that you do not upgrade your BIOS if you are not experiencing
any problems with your system. Updated BIOS files are located on our website at
supermicro.com.
To update your BIOS:
1. Check the BIOS warning message and the information on how to update your BIOS from
our website.
2. Select your motherboard model and check the current BIOS revision to make sure it is
newer than your motherboard's installed BIOS before downloading.
3. Download the zip file and save the BIOS package to your computer.
4. Unzip the BIOS files onto a USB stick with a FAT/FAT32 file system.
5. Boot to the motherboard's built-In UEFI Shell and type the following to start the BIOS
update process:
FLASH.nsh BIOSname#.### <ENTER>
Note: Supermicro no longer supports the BIOS update method in DOS.
6. Perform an A/C power cycle after the message indicating the BIOS update has completed.
You may refer to the "Readme" file in BIOS package for more details.
Question: Why can't I turn off the power using the momentary power on/off switch?
Answer: The instant power off function is controlled in BIOS by the Power Button Mode
setting. When the On/Off feature is enabled, the motherboard will have instant off capabilities
as long as the BIOS has control of the system. When the Standby or Suspend feature is
enabled or when the BIOS is not in control such as during memory count (the first screen
that appears when the system is turned on), the momentary on/off switch must be held for
more than four seconds to shut down the system. This feature is required to implement the
ACPI features on the motherboard.
Chapter 3: Troubleshooting
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