A-Tech 16GB Kit (4x4GB) RAM for QNAP ES2486dc NAS | DDR4 2133MHz PC4-17000 ECC RDIMM 1Rx8 1.2V 288-Pin ECC Registered DIMM Memory Upgrade at Amazon.com
HyperX Fury 64GB (4 x 16GB) DDR4 2133MHz DRAM (Desktop Memory) CL14 1.2V Black DIMM (288-pin) HX421C14FBK4/64 (Intel XMP, AMD Ryzen) - Newegg.com
Kingston FURY Beast 128GB (4 x 32GB) 288-pin DIMM DDR4 3600 MHz CL18 Black Memory (KF436C18BBK4/128) - Newegg.com
OWC 64GB (4 x 16GB) PC21300 DDR4 2666MHz 260pin SO-DIMMs Memory Ram Module Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs (OWC2666DDR4S64S) at Amazon.com
Kingston FURY Renegade 32GB (4 x 8GB) 288-pin DIMM DDR4 3600 MHz CL16 Black Memory (KF436C16RBK4/32) - Newegg.com
Gigabyte MB10 DS4 Server Motherboard Intel Chipset Socket BGA 1667 Mini ITX Intel Xeon D 1541 32 GB DDR4 SDRAM Maximum RAM UDIMM RDIMM DIMM 4 x Memory Slots Gigabit Ethernet 6
V-Color 32GB (2 x 16GB) ECC SO-DIMM DDR4 2666MHz (PC4-21300) for NAS Micro Server/Workstation/Compatible with Synology 21 Series 2Rx8 CL19 1.2V (TES416G26D819K-VKC) at Amazon.com