Arch Memory Replacement for Apple MUQQ2G/A 64 GB Kit (2 x 32 GB) 260-Pin DDR4 So-dimm RAM at Amazon.com
DATARAM 64GB (2 x 32GB) 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade for 2018 Mac Mini (macmini18,1), 2019 27 inch iMac (iMac19,1) and PC laptops at Amazon.com
64GB Kit 4x16GB DDR4-2933 PC4-23400 ECC SODIMM 2Rx8 Memory by NEMIX RAM at Amazon.com