Apple iMac 21.5" A1418. Late 2015 i5 2.8GHz 16GB RAM. Logic Board. Genuine Apple part, used tested and working. This is a used item so it may be dirty / very dirty / faded / yellow'ish / scratched / liquid marked / rusty and or have stickers / tape marks so it will not be in its original condition, if it's a multiple the one photographed may not be the one you receive.
eBay