40-ms801a-mac2hg Firmware Jun 2026

If you are building a new PC with this board or need that extra 3-5% GPU performance via Resizable BAR, this firmware is essential and works flawlessly. However, if your current system is stable and you don’t care about Re-Size BAR, this update offers little else of value to justify the risk and time of the flashing process.

Go to Settings (gear icon) > Device Preferences > About . Step 3: Select System Update . 40-ms801a-mac2hg firmware