Intel Desktop Board 21 B6 E1 E2 Specification |link|

Here are the official specifications for those boards:

Gigabit Ethernet Controller (10/100/1000 Mbps) onboard. USB:

Some variants retain legacy PS/2 keyboard/mouse ports and serial (COM) ports. Common Troubleshooting and Legacy Upgrade Paths intel desktop board 21 b6 e1 e2 specification

You can often see the specific model name (e.g., DH61BE, DQ67SW) on the initial splash screen when you turn on the computer or by entering the System BIOS .

Given the common appearance of this marking and its frequent mention alongside the code, your "21 b6 e1 e2" board is highly likely to be the . This was a popular micro-ATX board from the LGA775 era designed for budget-conscious yet capable systems. It was optimized for "Green PC" builds due to its support for 95W TDP processors, balancing cost and performance. Here are the official specifications for those boards:

If you found one in an e-waste pile or inherited an old tower, do not throw it away. Pair it with a 2.8 GHz Pentium D, 2GB of DDR2, and an 80GB IDE hard drive. It will run Office 2003, play MP3s, and operate CNC machinery reliably for another decade.

| Feature | Requirement to clear "21 b6 e1 e2" | | :--- | :--- | | | Intel D945GCCR / D945GCL | | RAM | 1x 512MB DDR2-533 (Low Density, Single Rank) | | CPU | Pentium 4 531 (3.0GHz, 800 FSB) – Not Core 2 Duo | | PSU | Minimum 250W with 4-pin 12V connector | | BIOS Version | 0049 or lower (Older BIOS have stricter timings) | Given the common appearance of this marking and

Because "/21-B6-E1-E2" is not a unique model number, you must look for other markings to find the official support page and drivers: