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
Amazon.com: Corsair Vengeance SODIMM 32GB (1x32GB) DDR4 2666 C18 1.2V for Intel 9th & 10th Gen Systems, Black : Electronics
Crucial Memory Bundle with 32GB (2 x 16GB) DDR4 2666MHz SODIMM Upgrade kit CT2K16G4SFD8266 Compatible with iMac Retina 5K 27-inch 2019 (iMac19,1) and Mac Mini 2018 (Macmini8,1) at Amazon.com
Crucial 32GB Kit (16GBx2) DDR4 2666 MT/s (PC4-21300) DR x8 SODIMM 260-Pin Memory - CT2K16G4SFD8266 at Amazon.com
AITC 32GB (2 x 16GB) Laptop Memory Module Upgrade DDR4 2666MHz SO-DIMM, Notebook Ram Module at Amazon.com