According to the official Intel E210882 Information Guide , these numbers represent Underwriters Laboratories (UL) safety standards, environmental compliance, or factory circuit board specifications. They dictate fire-retardant standards and PCB layering layout rather than system features.
| Category | Specification | | :--- | :--- | | | Intel Desktop Board DG31GL (Lakeport) | | Form Factor | microATX | | CPU Support | LGA775 socket for Intel® Core™2 Duo, Pentium® Dual-Core, Celeron® processors | | Chipset | Intel® G31 Express + ICH7 | | Memory Support | 2 DDR2 DIMM slots, up to 4GB of system memory | | Integrated Graphics | Intel® Graphics Media Accelerator 3100 (GMA 3100) | | Expansion Slots | 1 PCI Express x16, 1 PCI Express x1, 2 PCI | | Storage Interfaces | 4 SATA 3.0 Gb/s ports, 1 Ultra ATA 100 port | | Audio | Realtek ALC888S 6-channel (5.1) audio codec | | LAN | Realtek 8111B Gigabit (10/100/1000 Mbit) Ethernet controller | | USB Ports | 8 USB 2.0 ports (4 on back panel, 4 via headers) | | Rear Panel Connectors | VGA, 4 USB 2.0, LAN, audio (line-in, line-out, mic-in) | | BIOS | Intel BIOS |
or similar 2nd and 3rd Generation Intel Core (LGA 1155) motherboards. intel desktop board 21 b6 e1 e2 specification link
The board features 7.1-channel audio, which is supported by Intel High Definition Audio.
Variations featuring LGA 1155 sockets or LGA 1150 formats supporting early DDR3 infrastructure. According to the official Intel E210882 Information Guide
Intel Desktop Board 21 B6 E1 E2 with i3-4330 3.5GHZ 8GB DDR3 ATX LGA 1155/Socket H2 | DDR3 SDRAM
Enter that number into the Intel Product Compatibility Tool or the Intel Support site to find the specific model name (e.g., DH61BE, DQ67SW). The board features 7
If you cannot see a clear model name, look for a small white barcode sticker placed on the motherboard body (often on the edge of the board or near the back I/O ports). This sticker contains a code starting with the letters (e.g., AA E12345-XXX ). The AA number is a foolproof identifier that maps directly to a specific specification sheet. 3. Use Software Tools (If the System Boots)
: Look for bold white text printed directly on the circuit board starting with letters like DH61 , DG31 , DQ77 , or D2500 . This text is your true commercial model name. Alternative: Software Identification
| Code | Meaning (Intel AMI BIOS) | Likely Fix | |------|--------------------------|-------------| | | Memory presence detection / SPD reading failure | Reseat RAM, test one DIMM at a time | | B6 | SMBus (System Management Bus) initialization | Check power supply connections, remove non-essential PCIe cards | | E1/ E2 | Legacy option ROM (e.g., GPU, RAID controller) mapping error | Disable unused onboard devices, update BIOS |