Don't check the BIOS for RAM limits.

Look up your motherboard model’s official specifications online.

The BIOS will show you what RAM is currently installed and the type (DDR3/4/5), but it won’t tell you the factory-rated maximum capacity in a clean “yes it supports 32GB” line. That info is in the motherboard’s manual or spec sheet on the manufacturer’s website.

Just google your motherboard model + “max memory” or “specifications.” E.g., “ASUS B450-F max RAM.” If the product page says “up to 32GB” or “up to 64GB,” you’re good. No BIOS flash needed to read a spec sheet.

And if the page says “up to 16GB” and you want 32GB? You generally need a different board. No BIOS update can magically add memory channels or chipset support that wasn’t there.

A BIOS update might be required later to actually run 32GB reliably with two sticks, but that’s a separate, later step.