Adamanta 32GB (2x16GB) Memory Upgrade for 2020 Apple iMac 27" w/Retina 5K Display, 2019 Apple iMac 27" w/Retina 5K Display, 2018 Apple Mac Mini DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v DRAM
Kingston Technology ValueRAM 4GB 2400Mhz DDR4 Non-ECC CL17 SODIMM 1Rx8 PC Memory (KVR24S17S8/4) at Amazon.com
Patriot Signature Line Series DDR4 8GB (1 x 8GB) 3200MHz SODIMM Single at Amazon.com