[Motherboard] How to check what Bios version your motherboard is shipped with
The bios version is bottom of the barcode label , it is the last 4 digits of the barcode label. The barcode label is located between CPU socket and the memory slots. For example, this Maximus XII Extreme motherboard shipped with bios version 0403.
For PRIME series, it is also shown between CPU socket and memory slot, see it close up to find exact location of the bios version. Example: PRIME X570-PRO shipped with bios version 0405.