Intel Desktop Board 21 B6 E1 E2 Specification Link

. These numbers are often part of regulatory or specification markings on the physical board rather than the actual model identifier. Identified Specifications

Typically includes one PCI Express 2.0 x16 slot for dedicated graphics and may include additional PCIe x1 slots depending on the exact form factor. Storage: SATA 3.0 Gb/s and SATA 6.0 Gb/s ports. intel desktop board 21 b6 e1 e2 specification link