This string of characters likely refers to one of two things:
The board is a time capsule—a physical piece of Intel’s pre-UEFI, pre-Skylake engineering. It’s not fast by modern standards, but its specification is predictable, repairable, and fully documented. And now, exclusively, you have that documentation. intel desktop board 21 b6 e1 e2 specification exclusive
While this board is considered "legacy" by modern standards, its longevity is high. This string of characters likely refers to one
Because this marking is not a specific model name, "21 B6 E1 E2" does not have a single set of specifications. Instead, it is commonly associated with several boards, such as the DH61WW , DH61HO , or DH61BF . Common Specifications Found on These Boards While this board is considered "legacy" by modern
Desktop 3rd Generation Intel® Core™ Processor Family and Intel® Xeon® Processor E3-1200 v2 Product Family - External Design.
Storage interfaces include four SATA 3Gb/s ports (B6) or two SATA 6Gb/s + two SATA 3Gb/s ports (E1/E2). The E2 further integrates an mSATA connector for boot drives, a crucial addition for embedded and thin-client systems.
Because this code appears on multiple different boards, searching for it usually leads to listings for older or Ivy Bridge (3rd Gen) hardware. How to Find Your True Board Model