Intel Desktop Board 01 21 B6 E1 E2 Er Info

Standard legacy connectivity including USB 2.0 , Ethernet (RJ-45) , and often onboard video outputs (VGA/DVI). Identification Tips

| Code | Meaning (from Intel POST Code Reference) | |------|--------------------------------------------| | | Processor internal test – starting CPU initialization. If stuck, indicates CPU or power issue. | | 21 | OEM memory detection / initial memory sizing. Very common early step. | | b6 | Not standard Intel. Likely a vendor-specific or misread code. In AMI BIOS (used on some Intel boards), b6 is “Clean-up of NVRAM.” | | e1 | Not standard. Possibly “E1” meaning “Runtime APIC initialization” or in some boards, “Error in SMM (System Management Mode).” | | e2 | Could be “E2” – “Initialize multi-processor AP” or in some cases “Invalid password” (rare). | | er | Most likely an error display on a 2-character debug LED – meaning “ER” = General Error / Halt. Could be “E2” misread as “Er.” | intel desktop board 01 21 b6 e1 e2 er

The string refers to a series of identifiers found on older Intel desktop motherboards, typically from the LGA 1155 socket era (circa 2011–2012) . While it is often mistaken for a model name in online listings, it is actually a string of regulatory and manufacturing markings rather than the board's specific model number (like DH61BE or DB75EN). Identification and Specifications Standard legacy connectivity including USB 2

Based on listings and community reports for boards bearing this marking, the primary specifications are: : Intel H61 Express . Socket : LGA 1155 . | | 21 | OEM memory detection / initial memory sizing