Based on the "21b6e1e2" identifier found in hardware listings: LGA 1155 (Supports Sandy Bridge i3/i5/i7). Memory: Dual-channel DDR3 RAM slots.
When prompted with the 5 options to choose from, select # 3 (Update both, the SDR and FRU ) and follow the on-screen instructions. intel desktop board 21b6e1e2 manual updated
Based on common boards featuring the 21-b6-e1-e2 marking, your hardware likely follows these specs: : LGA 1155 (Socket H2). Based on the "21b6e1e2" identifier found in hardware
Once you have downloaded the PDF, turn your attention to these critical chapters: select # 3 (Update both