Dell Motherboard For Dell Precision 3680 Tower ( T3680 ) - System Board ( 1 ) One Fclga1700 Socket ( Compatible With 14th Gen Intel Core I3 / I5 / I7 / I9 Processors ) ( 1 ) One 1gbe Rj45 Lan Port ( Rj-45 ) ( 4 ) Four Ddr5 Dimm Slots Up To ( 3 ) Three Pci