Frequently Asked Questions - Supermicro H13SSH User Manual

3.3 Frequently Asked Questions

Question: What type of memory does my motherboard support?
Answer: The H13SSH motherboard supports up to 6TB of ECC DDR5 3600/4000 MT/s
speed, RDIMM/3DS RDIMM in 24 slots. See
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. Please check the BIOS warning message and the information on how to update your
BIOS on 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 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 4 Seconds Override 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 shutdown the system. This feature is required to implement the
ACPI features on the motherboard.
Chapter 3: Troubleshooting
Section 2.4 for details on installing memory.
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