16GB DDR3 1866Mhz PC3L-14900 ECC RDIMM 2Rx4 1.35V 240pin Hynix Original Part # HMT42GR7AFR4A-RD DDR5-ECC UNBUFF Manufacturer Samsung Memory Type DDR4

Manufacturer Samsung  Memory Type DDR4 Capacity 16GB  Data Transfer Rate 2666Mhz  Bus Type PC4-21300

Manufacturer Micron  Memory Type DDR5 Capacity 16GB Data Transfer Rate 5600Mhz Bus Type PC5-44800

Manufacturer Micron Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2666Mhz  Bus Type PC4-21300

Manufacturer Hynix Memory Type DDR4 Capacity 4GB  Data Transfer Rate 2133Mhz  Bus Type PC4-17000

16GB DDR3 1866Mhz PC3L-14900 ECC RDIMM 2Rx4 1.35V 240pin Hynix Original Part # HMT42GR7AFR4A-RD DDR5-ECC UNBUFF Manufacturer Samsung Memory Type DDR4Manufacturer Hynix Memory Type DDR3 Capacity 16GB Data Transfer Rate 1866Mhz Bus Type PC3L 14900