Intel Desktop Board 21 B6 E1 E2 Specification Link
21-B6-E1-E2
The identifier "" is not a specific motherboard model name but a regulatory or industry specification marking found on several legacy Intel desktop boards . Because this marking appears on multiple boards, specifications can vary, though most listings associated with this number refer to LGA 1155 (Sandy Bridge/Ivy Bridge) or LGA 1150 (Haswell) motherboards. Typical Specifications
General Information
Here is the official specification link from Intel: intel desktop board 21 b6 e1 e2 specification link
- 1 x PCI Express 2.0 x16
- 2 x PCI Express 2.0 x1
- 1 x PCI Conventional
(some documentation suggests a limit of 8 GB depending on the specific AA revision) of DDR3 1600/1333/1066 MHz non-ECC memory. Expansion & Graphics PCI Express 3.0 x16 slot for dedicated GPUs. Dual display support via integrated VGA and DVI-D ports (requires a processor with Intel HD Graphics). Connectivity 10 x USB 2.0 ports (6 rear, 4 internal headers). 4 x SATA 3.0 Gb/s ports. Gigabit Ethernet (10/100/1000 Mbps). The Retro Web Important Resources & Drivers Official Product Guide 21-B6-E1-E2 The identifier "" is not a specific
- Limited memory capacity and older DDR2 memory.
- Integrated graphics are weak for modern media or gaming.
- No native USB 3.0, SATA III, or modern connectivity.
- Possible limited driver support on modern OSes without legacy drivers.
Why the confusion?
Intel uses "AA Numbers" (like E21816) to track revisions. The string "21 B6 E1 E2" is often how OCR software or users read the dense barcode label on the board or the box. This identifies the board as the DQ67OW , a popular business-class motherboard released around 2011 for 2nd and 3rd Generation Intel Core processors. 1 x PCI Express 2
Check the board itself
for a label like: BOXDG41RQ , BLKDH67GD , or a 5–7 alphanumeric code starting with D .
LGA 775 socket
This board uses an . It supports the following processors (check your specific BIOS version for full support):