Apple iMac 21.5" A1418 2017 Logic Board i5 3.4GHz Radeon Pro 560 4GB 820-01061-A. Apple iMac A1418 21.5" 2014 Logic Board i5 1.4GHz 8GB 820-4668-A 661-00147. This is an OEM part pulled from a fully functional iMac and tested to ensure stability and compatibility.
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