Micron 16GB DDR4 SDRAM Memory Module at Amazon.com
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
Kingston 16GB DDR4 SDRAM Memory Module at Amazon.com
GeIL Orion DDR4 RAM, 16GB (8GBx2) 3200MHz 1.35V XMP2.0, Intel/AMD Compatible, Long DIMM High Speed Desktop Memory, Hardcore Immersive Gaming/Multimedia Content Creation/Quality Live Streaming at Amazon.com
Corsair VENGEANCE LPX DDR4 16GB (2x8GB) 3200MHz CL16 Intel XMP 2.0 iCUE Compatible Computer Memory - Black (CMK16GX4M2E3200C16) at Amazon.com