Apple Computer, iMac 21.5-inch 1.6/2.8 GHz Core i5 (i5-5675R, i5-5575R),
Compatible Order Number, MK142LL/A, MK442LL/A,
Compatible Model Number, A1418,
Model Year, Late 2015,
Part Name, Logic Board 1.6 GHz (16GB) - SSD,
Manufacture Part Number, N/A,
EMC Number, EMC 2833,
EEE Code, GDF9, GQ6F, GQ6G, GVYQ,
Apple Computer, iMac (21.5-inch, Late 2015)
Order you product here:
661-02887 Logic Board 1.6 GHz (16GB) - SSD for iMac 21.5-inch Late 2015 A1418 MK442LL/A, MK442LL/A,
661-02887
source
http://blogs.applepartsellers.com/661-02887-16gb-logic-board-1-6ghz-i5-ssd-for-imac-21-5-inch-late-2015-a1418-mk142ll-a-mk442ll-a.html