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Intel Desktop Board 21 B6 E1 E2 Specification Exclusive May 2026

  • eSATA: 1 port (rear, shares bandwidth with one SATA 3Gb/s internal)
  • Intel RST: Supports RAID 0/1/5/10 on SATA ports 0-3 only
  • sSATA port: None (unlike server boards)

    • The Intel Desktop Boards associated with the manufacturing codes "21 B6 E1 E2" belong to the performance mainstream segment, designed to support the 2nd and 3rd Generation Intel Core processors (Sandy Bridge and Ivy Bridge microarchitectures). These boards utilize the Intel H67 or B65 Express Chipset, providing a balance of performance, connectivity, and integrated graphics output.

    If you are repairing a board with the 21 B6 E1 E2 code and the front panel header is broken, here is the exclusive pinout (from Intel’s internal 2009 engineering PDF):

    The 21 B6 E1 E2 boards use the Intel standard 2.54mm header – not the proprietary Dell/HP standard. intel desktop board 21 b6 e1 e2 specification exclusive

  • LAN (Networking):

    • Are you looking at an online listing or a dusty board in a lab? Here is how to confirm:

    Most users assume the 21 B6 E1 E2 series is Windows 10 dead. False. With the right exclusive drivers, the G41 variant works: eSATA: 1 port (rear, shares bandwidth with one

    Exclusive performance note: Do not attempt to use an NVMe SSD via PCIe adapter. The 21 B6 E1 E2 BIOS lacks UEFI boot and cannot recognize NVMe drives as bootable.

    A smaller subset of boards with the 21 B6 E1 E2 code actually belongs to the high-performance DP45SG "Extreme Series." How to tell the difference? Look for an ICH10R southbridge and a copper heatpipe. The Intel Desktop Boards associated with the manufacturing

    | Specification | Detail | | :--- | :--- | | Form Factor | ATX (12.0″ x 9.6″) | | Chipset | Intel P45 Express + ICH10R | | CPU Socket | LGA775 | | Supported CPUs | Core 2 Extreme QX9770, Core 2 Quad, Core 2 Duo (FSB 1600 MHz OC) | | Memory | 4 x DDR3 DIMM slots (max 8GB officially – 16GB with experimental BIOS) | | Memory Speed | DDR3-1333, DDR3-1600 (OC) | | Integrated Graphics | None (discrete GPU required) | | Expansion Slots | 2 x PCIe 2.0 x16 (CrossFireX support), 2 x PCIe x1, 2 x PCI | | Storage | 6 x SATA 3Gb/s (RAID 0/1/5/10), eSATA (via header) | | Audio | Realtek ALC888S (7.1 channel) | | Exclusive Feature | Intel Extreme Tuning Utility support, on-board power/reset buttons |

    Exclusive Insight: The DP45SG's 21 B6 E1 E2 marking is located near the CMOS battery. These boards are highly prized for running Windows XP with Core 2 Quad Q9650 processors at 4.0 GHz.