RAM & Memory Upgrades
Samsung 64 GB, DDR4, 2666 MHz Memory Module 64 GB ECC – Memory Modules (DDR4, 2666 MHz, 64 GB, 8 x 8 GB, DDR4, 2666 MHz, 288-pin DIMM, Multi-Colour)
Manufacturer: SAMSUNG Capacity: 64GB Model: M386A8K40BM2-CTD6Q Technology: PC4-2666V LRDIMM DDR4 ECC PC4-21300 Server Memory
https://www.bizrate.co.uk/ram_memoryupgrades/samsung-64-gb-ddr4-2666-oid32170728433.html