Based on the alphanumeric string you provided ( 01 21 B6 E1 E2 ER ), this does not correspond to a standard Intel model number (like DG965WH or DQ45CB). Instead, this string is a or BIOS ID typically found on a sticker on the BIOS chip itself or printed on the PCB near the memory slots/PCIe slot.
from a label
Let’s dissect each alphanumeric value. intel desktop board 01 21 b6 e1 e2 er