Dell Inspiron 20" 3048 Series Intel Socket LGA1155 All-In-One Desktop Motherboard HD5K4 0HD5K4 CN-0HD5K4.Dell Part Number: HD5K4 0HD5K4 CN-0HD5K4Compatible Part Numbers: 13048-1 Tigris 70MRTCompatible Models: Dell Inspiron 20" 3048 Series