Norcold Power Supply Board Fits N3150/N3104 Models. This Power Supply Circuit Board is only compatible with the N3150 and N3104 models with a serial number between the following ranges: E001N - E366N; E001P - E365P; E001R - E365R or E001S - E058S. Refer to manufacturer recommendations to ensure a proper fit. Quick and easy installation. Features of Norcold 691449 Power Supply Board Fits N3150/N3104 Models Replacement Board for N3150 and N3104 models N3150 and N3104 models must have a serial number between one of the following ranges: E001N - E366N; E001P - E365P; E001R - E365R and E001S - E058S Refer to manufacturer recommendations to ensure proper fit and usage Quick and easy installation Package Contents: Norcold 691449 Power Supply Board Fits N3150/N3104 Models Norcold 691449: Power Supply Board Fits N3150/N3104 Models