These codes often refer to UL (Underwriters Laboratories) safety certifications or FCC compliance markings required for electronics sold globally.
This specific string is most frequently seen on motherboards from the Sandy Bridge (2nd Gen) and Ivy Bridge (3rd Gen) eras, often featuring the LGA 1155 socket . Key Specifications of Boards with these Markings intel desktop board 01 21 b6 e1 e2 er new
" is often found on labels or printed directly on older Intel motherboards. These codes often refer to UL (Underwriters Laboratories)