HyperX Fury 32GB 2666MHz DDR4 CL16 DIMM (Kit of 4) 1Rx8 RGB XMP Desktop Memory HX426C16FB3AK4/32 at Amazon.com
Crucial Memory Bundle with 32GB (2 x 16GB) DDR4 PC4-21300 2666MHz(CT2K16G4SFS8266) 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
HyperX Fury 16GB 2666MHz DDR4 CL16 DIMM Black XMP Desktop Memory Single Stick HX426C16FB3/16 at Amazon.com