RAM & Memory Upgrades
16GB (2 x 8GB) DDR4 2666MHz PC4-21300 288-PIN ECC REGISTERED DIMM (RDIMM) MEMORY RAM KIT COMPATIBLE WITH SERVERS/WORKSTATIONS/MOTHERBOARDS (*NOT FOR PCs*) (2 RANK KIT CHIPKILL)
SIZE/CAPACITY: 16GB KIT (2x 8GB) VOLTAGE/POWER CONSUMPTION: 1.2v CAS LATENCY: CL19 SPEED: PC4-21300 (2666MHz) TYPE/INTERFACE: 288-PIN DDR4 ECC REGISTERED DIMM (RDIMM) (1 RANK ADVANCED ECC/CHIPKILL) 288-PIN DDR4 ECC REGISTERED DIMM
https://www.bizrate.co.uk/ram_memoryupgrades/16gb-2-x-8gb-ddr4-oid10211137162.html