Norcold Optical Display Board 628663 (N410/ N510 models)

This is the front board of the refrigerator. If your refrigerator's serial number is above 9140559 then this is the board that you need!  If your serial number is below that number, you need:

Norcold 633273 Board Kit

If you have a 3 way model (N410.3, N412.3, N510.3, N512.3) and your serial number is below 9140559, you need:

Norcold 633291 Board Kit

The serial number can be located inside the refrigerator on the right hand side printed on a decal.