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
Usually includes Ethernet (RJ-45), USB 2.0, and USB 3.0. intel desktop board 21 b6 e1 e2 specification link
According to Intel's website, the Intel Desktop Board D21-B6-E1-E2 is a server board, not a typical desktop board, and it's part of the Intel S1200BT family. The alphanumeric code (often found near marking E210882)
Look for a small barcode label with a number starting with "AA" (e.g., AAD53350-205 ). This is the most accurate way to identify your board. According to Intel's website, the Intel Desktop Board
: Enter that AA number into the Intel Support Search to pull up the exact Technical Product Specification (TPS).