Intel Desktop Board 21 B6 E1 E2 Specification Link ((hot)) -

Older industrial variations utilizing LGA 775 structures combined with legacy DDR2 setups.

If you are currently looking for a way to identify, repair, or get drivers for your specific motherboard, it is recommended to use the (usually a 6-digit number, e.g., 123456-xxx) printed on a white sticker on the board itself. Understanding the Regulatory Marking "21-B6-E1-E2" intel desktop board 21 b6 e1 e2 specification link