Apple Computer, iMac 27-inch 3.5 GHz Core i5 (i5-4690), iMac 27-inch 4.0 GHz Core i7 (i7-4790K), Compatible Order Number, MF886LL/A, Compatible Model Number, A1419, Model Year, Late 2015, Part Name, Logic Board 3.5 GHz (4GB VRAM) ( CPU NOT INCLUDED ), Manufacture Part Number, N/A, EMC Number, EMC 2806, EEE Code, FT04, FW6K, GG3K, GG3M, Compatible Apple Computer, iMac - 5K (27-inch, Late 2014)
Order you product here: 661-00192 Logic Board 3.5 GHz (4GB VRAM) for iMac 27-inch Late 2015 A1419 MF886LL, 661-00192
source http://info.applepartsellers.com/661-00192-logic-board-3-5-ghz-4gb-vram-for-imac-27-inch-late-2015-a1419-mf886ll