Intel Desktop Board 01 21 B6 E1 E2 Er [patched] Jun 2026

a secondary identification code found on several legacy Intel desktop motherboards, most notably industrial and standard consumer models like the Intel Desktop Board D2500CC socket boards Understanding the ID Code

This alphanumeric string is often found printed directly on the PCB or on a sticker near the I/O ports and expansion slots. While users often search for it as a model number, it more accurately represents a batch, revision, or regulatory identifier rather than the commercial model name (like "DH61CR" or "DQ67SW").

Intel technical documents list several other fatal memory errors in the same range: intel desktop board 01 21 b6 e1 e2 er

Often indicates S3 Resume or memory-related errors during the boot sequence.

When sourcing components on secondary marketplaces, builders frequently encounter text strings like /21-b6-e1-e2-er or 21-B6-E1-E2 . This guide decodes what these markings mean, details the specific motherboard platforms they are attached to, and outlines how to preserve, maintain, or find drivers for these legacy platforms. Decoding the Motherboard Markings a secondary identification code found on several legacy

This string is often found on older Intel desktop boards from the Sandy Bridge (2nd Generation)

The code "" refers to a common marking found on older Intel desktop motherboards, typically from the Sandy Bridge (2nd Generation Core) era . While this specific string is often printed on the board or a sticker, it is a regulatory or manufacturing code rather than a unique model number. While this specific string is often printed on

While "Intel Desktop Board" is the product line, the string 01 21 B6 E1 E2 does not correspond to a standard commercial model name (like "DQ67OW" or "DH67BL"). Instead, this string is characteristic of or SMBus Device IDs found in hardware documentation.

Many Intel desktop board labels have format: 01 21 B6 E1 E2 ER as a human-readable hex + checksum.

The consensus: The board , then shows er . This usually indicates:

Intel desktop boards (discontinued since ~2013) used a combination of: