The identifiers 01 21 b6 e1 e2 er (often simplified to 21 B6 E1 E2
To find more detailed information without opening your case, you can use several Windows system tools: How to check motherboard model on any PC - SuperOps intel desktop board 01 21 b6 e1 e2 er new
Some older Intel boards (e.g., Intel Desktop Board D845GVSR, D865PERL) had a boot block BIOS that outputs diagnostic beeps or codes when the main BIOS is corrupt. Codes E1 and E2 specifically appear in Intel BIOS recovery modes: The identifiers 01 21 b6 e1 e2 er
These boards were built around the Intel Atom processor era, designed for low-power computing. Here is an interesting review of that hardware ecosystem. Listed as "New" — includes factory-sealed board, I/O
Is it valuable?
Yes, but only to collectors of Intel prototype hardware or those reverse-engineering Intel’s firmware. For a normal PC build, an "ER New" board is a risk – it might reject retail CPUs, have non-final voltage regulators, or lack certain PCIe lanes.
Before you buy, demand photos of the CPU socket, the capacitor tops, and the AA number. If you already own the board, start with a fresh CMOS battery, low-density DDR2, and a 65nm Pentium 4. With patience, you can resurrect a piece of Intel history—no POST error codes required.