661-6539 2.7GHz Logic Board, i7 with 16GB RAM, A1398 for MacBook Pro 15inch Retina Mid 2012 NB-5586W
This is a replacement 2.7GHz logic board for the Retina MacBook Pro released in Mid 2012.
EEE code: DYW5,F0HM,F0HT,F0HY
Apple part number: 661-6539
Compatible models: A1398
661-6539 2.7GHz Logic Board, i7 with 16GB RAM, A1398 for MacBook Pro 15inch Retina Mid 2012