Intel Desktop Board 21 B6 E1 E2 Specification Link [portable]

If you’ve peeked inside an older PC and spotted the marking 21 B6 E1 E2

The alphanumeric code (often found near marking E210882) is a regulatory or industry specification marking rather than a specific Intel motherboard model name. However, this marking is most commonly associated with boards featuring the LGA 1155 socket and 2nd Generation Intel Chipsets (like the H61 or Q67). General Specifications intel desktop board 21 b6 e1 e2 specification link