Crucial Memory Bundle with 16GB (2 x 8GB) DDR4 2666MHz SODIMM Upgrade kit CT2K8G4SFS8266 Compatible with iMac Retina 5K 27-inch 2019 (iMac19,1) and Mac Mini 2018 (Macmini8,1) at Amazon.com
Amazon.com: Corsair Vengeance SODIMM 32GB (1x32GB) DDR4 2666 C18 1.2V for Intel 9th & 10th Gen Systems, Black : Electronics
HP - DDR4 - Module - 8 GB - SO-DIMM 260-PIN - 2666 MHZ / PC4-21300 - UNBUFFERED at Amazon.com
Axiom 8GB DDR4 SDRAM Memory Module - for Mini PC - 8 GB - DDR4-2666/PC4-21300 DDR4 SDRAM - CL19-1.20 V - 260-pin - SoDIMM - TAA Compliance at Amazon.com
parts-quick 8GB Memory for HP ProBook 450 G7 DDR4-2666 SODIMM RAM at Amazon .com