Use this filtered search for all legacy Intel Desktop Boards:
https://www.intel.com/content/www/us/en/support/products/52586/desktop-boards.html
Chipset: Intel H61 Express
Socket: LGA1155
Supported CPUs: Core i7-2600, i5-2400, i3-2100, Pentium G800/G600, Celeron G500
Max RAM: 16GB DDR3 1066/1333 MHz (2 DIMM slots)
Form Factor: microATX (9.6” x 6.9”)
Key Specs:
D (e.g., DG41RQ, DP67BG, DH77EB) printed on the board.https://ark.intel.comhttps://www.intel.com/content/www/us/en/support/products/archived.htmlIf you can share a photo of the board (or any other printed numbers like AA number, batch code, or FPO), I can help identify it exactly and provide the spec link.
Would you like general tips for identifying legacy Intel desktop boards instead?
Demystifying the "Intel 21 B6 E1 E2": A Guide to Identification and Specs intel desktop board 21 b6 e1 e2 specification link
If you’ve peeked inside an older PC and spotted the marking 21 B6 E1 E2
etched onto the motherboard, you might be scratching your head trying to find a manual or driver for that specific model. The reality is that "21 B6 E1 E2" is not actually a model number.
It is a regulatory and industry specification marking used by Intel across many different desktop boards. Because of this, searching for it directly can be confusing, but don't worry—here is how to identify what you actually have and what the common specs look like. Why "21 B6 E1 E2" Isn't Your Model Number
Intel motherboards often feature various regulatory codes like 21-b6-e1-e2
. These numbers indicate compliance with safety or industry standards rather than the specific board identity. To find your true model number (like ), you should look for a small white barcode label with an (Altered Assembly). Common Variations Found in the Wild Intel Desktop Board D21B6 (E1/E2) — Quick Specification
Despite being a generic marking, this code frequently appears on boards from the
eras (roughly 2nd to 4th Gen Intel Core processors). Here are common configurations often sold under this label on sites like Socket LGA 1155 Version : Often paired with 2nd or 3rd Gen CPUs like the Intel i5-2300 : Typically supports memory with 2 to 4 slots. Form Factor Socket LGA 1150 Version : Such as the Intel DB85FL : Intel B85. : Supports Key Specifications Table (Typical for these Boards) Specification CPU Socket LGA 1155 (2nd/3rd Gen) or LGA 1150 (4th Gen) Memory Type DDR3 SDRAM Often 8GB to 32GB (depends on specific model) Integrated Intel HD Graphics (via CPU) 1x PCIe x16, multiple PCI/PCIe x1 slots Helpful Resources and Links
If you need specific technical documentation, you’ll need to use your
on official support pages. However, here are general starting points: Official Intel Support Intel Support Tool to auto-detect your hardware. Manuals & Guides
: General integration guides for these vintage boards can be found on Intel's Integration Hub : Once you identify the model, you can search the Intel Download Center Troubleshooting Tip: "Platform Not Supported" Vintage Intel desktop board BIOS update files needed Option A: Intel Desktop Board DH61CR (Most Likely)
Intel Desktop Board DZ77SL-50KZ Specification
The Intel Desktop Board DZ77SL-50KZ, also known as the Intel Desktop Board 21 B6 E1 E2, is a high-performance motherboard designed for 3rd generation Intel Core processors. This motherboard offers a wide range of features, including USB 3.0, SATA 6Gb/s, and Intel Gigabit Ethernet, making it an excellent choice for gamers, content creators, and businesses.
Key Features
Detailed Specifications
The Intel Desktop Board (DG41RQ) identified by the code 21 B6 E1 E2 is strictly a legacy or retro computing board.
The Intel Desktop Board D21B6 (also marketed as D21E1 / D21E2 variants) is a compact, socketed motherboard series designed for small-form-factor desktop and embedded systems. It blends stable Intel chipset features with legacy I/O support, making it useful for industrial, thin-client, kiosk, and home-office builds that need long-term availability and reliable onboard interfaces.