This is an OEM Frigidaire Microwave Control Board model 5304523974 that has been tested for functionality. It is designed for over-the-range (OTR) installation and is compatible with specific Frigidaire microwave models including FFMV1846VBA, FFMV1846VDA, FFMV1846VSA, FFMV1846VWA, and LFMV1846V.