Used Hynix HMA851S6CJR6N 8GB Ram (2x4GB)
Specs:
4GB per module
PC4-23100
2666mhz
SO-DIMM
1.2v
Non EEC
Part numbers: HMA851S6CJR6N
Fits:
Apple Mac Mini 2018
Apple iMac 27″ 2019
and other PCs that use the same spec ram
Fully tested working part