Intel Desktop Board 21 B6 E1 E2 Specification Link -

DDR3 SDRAM . Most boards with this footprint feature two DIMM slots supporting dual-channel configurations.

Visit the Intel Support for Boards & Kits page. Enter your AA number or the primary model number (often found near the PCIe slot) into the search bar.

LGA 1155 (Socket H2), supporting Sandy Bridge and some Ivy Bridge processors. intel desktop board 21 b6 e1 e2 specification link

Intel Desktop Board 21-B6-E1-E2 w/ Intel i5-2300 4GB ... - eBay

If the official Intel link is archived, sites like eBay often list detailed physical specs for these used boards. Technical Troubleshooting & Drivers DDR3 SDRAM

2nd Generation Intel Core i7, i5, and i3 processors (e.g., Intel Core i5-2300 ).

Typically includes one PCI Express 2.0 x16 slot for dedicated graphics and may include additional PCIe x1 slots depending on the exact form factor. Storage: SATA 3.0 Gb/s and SATA 6.0 Gb/s ports. Enter your AA number or the primary model

If the board fails to POST, check for BIOS version compatibility, especially when using 3rd Gen Intel CPUs on older 2nd Gen boards.

Based on hardware listings for boards carrying this marking, the primary technical specifications include:

Standard legacy connectivity including USB 2.0, USB 3.0, Ethernet (RJ-45), and various video outputs like VGA, DVI, or DisplayPort depending on the specific model variant. How to Find Official Specification Links