Norcold Optical Display Board 628570 (fits the 2117 models) This is the front Optical Control/ Display board board for all 2117 model refrigerators, regardless of serial number. Fits these Norcold refrigerator models:2117 series: 2117IM, 2117IMC, 2117IMD, 2117IMCD, 2117IMBK, 2117IMCBK, 2117IMBK... See More