Dual-channel (up to 16GB or 32GB depending on exact model) Chipset Often associated with Intel Z77 Express or H61 Expansion Slots 1x PCI Express 2.0/3.0 x16, multiple PCIe x1 slots Storage SATA 3.0 Gb/s and SATA 6.0 Gb/s connectors I/O Ports
The I/O shield of the 21 B6 E1 E2 is a testament to its versatility. It bridges the gap between classic peripheral support and modern high-speed data transfer. intel desktop board 21 b6 e1 e2 specification exclusive
: Older boards utilize legacy BIOS code or early UEFI revisions that struggle to negotiate handshakes with modern graphics cards requiring robust UEFI environments. Dual-channel (up to 16GB or 32GB depending on
| | Detailed Information | | :--- | :--- | | Board Form Factor | microATX : 9.60 inches by 8.60 inches (243.84 mm x 218.44 mm). | | Processor Socket | LGA775 socket. | | Supported Processors | Supports the following processors in an LGA775 socket: Intel® Core™2 Quad (up to 1333 MHz system bus), Intel® Core™2 Duo (up to 1333 MHz system bus), Intel® Pentium® Dual-Core (800 MHz system bus), and Intel® Celeron® (800 MHz system bus). | | Chipset | Intel® G31 Express Chipset comprising: Intel® 82G31 Graphics and Memory Controller Hub (GMCH) and Intel® 82801GB I/O Controller Hub (ICH7). | | Memory Support | Two 240-pin DDR2 SDRAM DIMM sockets supporting DDR2 800 MHz or DDR2 667 MHz DIMMs. | | Maximum Memory | Up to 4 GB of system memory using non-ECC, unbuffered, 1.8V DIMMs in either single or dual-channel configuration. | | Integrated Graphics | Intel® Graphics Media Accelerator 3100 (Intel® GMA 3100) onboard graphics subsystem with a VGA output connector. | | Expansion Slots | Two PCI Conventional bus add-in card connectors. | | Storage I/O | Two Serial ATA (SATA 3.0 Gb/s) interfaces (support for up to two drives) and One Parallel ATA (IDE) connector supporting UDMA 33, ATA-66/100 for legacy drives. | | Back Panel I/O Ports | VGA graphics port; four USB 2.0 ports; 10/100 Mb/s LAN port; four-channel audio jacks; PS/2 ports for mouse and keyboard; legacy serial port; Parallel printer port. | | Onboard Headers | Four additional USB 2.0 ports via two front-panel headers; one legacy serial port header; one diskette drive connector. | | LAN | 10/100 Mbit/sec LAN subsystem using the Intel® 82562G Ethernet Controller. | | Audio | 4-channel (2+2) audio subsystem using the Realtek ALC268-GR audio codec. | | BIOS | Intel® BIOS resident in a 4 Mbit (512 KB) SPI Flash device, supporting ACPI, Plug and Play (PnP), SMBIOS, and PCI autoconfiguration. | | Power Requirements | Requires standard ATX power supply with 2x12 main power connector and 12V (2x2-pin) processor power connector. | | Temperature Range | Operating: 0°C to +55°C. | | Environmental | ENERGY STAR® capable. | | | Detailed Information | | :--- |
The D21B6E1E2 adheres to a strict Micro-ATX form factor (approximately 244mm x 244mm). This compact dimension suggests it was designed for space-constrained environments, likely intended for deployment in kiosks, industrial control systems, or corporate fleet desktops. The board features a high-quality PCB design typical of the mid-to-late LGA115x era, focusing on durability and long-term thermal stability over aesthetic flair.
Typically features 2 to 4 DIMM slots supporting DDR3 SDRAM up to 1600 MHz.
The string (often found near E210882 ) is not a specific motherboard model number but rather a series of regulatory and industry specification markings found on a wide variety of older Intel desktop boards. To find your exact specifications, you should look for the AA (Altered Assembly) number printed on a small barcode label on the board itself.