SKU: A-5027-263-AMAIN BOARD NUMBER(S): 1-010-115-21 | A5027249A | A-5027-263-A | 484D.COMPATIBLE MODELS: XR50X90J, XR75X90J, XR75X90CJ, XR55X90J, XR65X90CJ, XR55X90CJ, XR65X90J, XR65X90J, XR50X90J, XR55X90J, XR75X90J.NOTES: MAY need software/firmware update to complete board installation. FIXES 3 RED BLINK ERROR CODE. WILL NOT FIX 4 BLINK