Apple iMac 21.5in 4K Retina Desktop (2017) 1TB (A1418) 16gb Ram 3.0 gH – TeK3mK Apple Reseller
iMac 21.5" A1418 Mid 2017 Logic Board - Retina Version - No CPU - 820- - Part Haven
Amazon.com: 185W PSU A1418 APA007 Power Supply Board for Apple iMac 21.5" A1418 Late 2012 Early 2013 Mid 2014 Late 2015 MID2017 A2116 Early2019 Year ADP-185BF Power Supply Board : Electronics