OWC 32GB (2 x 16GB) PC21300 DDR4 2666MHz SO-DIMMs Memory, Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs, (OWC2666DDR4S32P) at Amazon.com
PNY Performance 16GB DDR4 DRAM 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook/Laptop (SODIMM) Computer Memory RAM – MN16GSD42666 at Amazon.com
Crucial CT16G4RFD4213 16GB Single DDR4 2133 MT/s (PC4-2133) CL15 DR x4 ECC Registered DIMM 288-Pin Server Memory,Black/Green at Amazon.com
Kingston HyperX FURY 8GB 1600MHz DDR3 CL10 DIMM - Blue (HX316C10F/8) at Amazon.com
ADATA Premier 260-Pin SODIMM Memory RAM (1x8GB, 3200Mhz, Premier) at Amazon .com
Kingston Value (KVR16N11/8) RAM 8 GB 1600MHz DDR3 (PC3-12800) Non-ECC CL11 240 Pin DIMM Motherboard Memory at Amazon.com
Amazon.com: Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 3200MHz C16 Desktop Memory Kit - Black (CMK16GX4M2B3200C16) : Electronics
G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-25600) DDR4 3200 CL16-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3200C16D-16GTZR at Amazon.com