661-03173 Logic Board 4.0 GHz (4GB) for iMac 27-inch (5K) Late 2015 A1419 MK462LL/A, MK482LL/A, BTO/CTO (820-00134-A) This is a replacement 4.0GHz Core i5 logic board with a M395X GPU and 4GB of VRAM for the late 2015 iMac 27".
EEE CODE : GPJF, GPJH
Model Compatible Number : A1419
Apple Compatible Order Number : MK462LL/A, MK482LL/A, BTO/CTO
Apple Computer Family : iMac-5K (27-inch, Late 2015)