Gigabyte has quietly removed an unofficial PCIe 5.0 option from its B650 motherboards with the latest BIOS updates. The change has sparked significant furor among enthusiasts who noticed the tweak after flashing their boards. This only affects the PCIe x16 slot reserved for GPUs, and not the x4 M.2 slots that Gen5 SSDs would use.
According to reports on Reddit and Chiphell, the removal first occurred in BIOS version F35 for models like the B650 Gaming X AX V2. Users who previously saw a “Gen 5” setting for the primary PCIe x16 slot in BIOS now found the option missing entirely, with link speeds capped at PCIe 4.0. Rolling back to BIOS F34 brings PCIe 5.0 support back, confirming this was a BIOS functionality change.
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