Intel Desktop Board 21 B6 E1 E2 Specification Link Updated Jun 2026

General guidance for these legacy boards can be found in the Intel Integration Guide or on sites like ManualsLib for similar regulatory-labeled boards.

1 x PCI Express 2.0 x16 slot; some variants include additional x16 slots running in x4 mode. I/O Ports: Ethernet (RJ-45), USB 2.0 and USB 3.0 Resources for Specific Models intel desktop board 21 b6 e1 e2 specification link