8GB DDR3 1866Mhz PC3-14900 ECC RDIMM 2Rx8 1.5V 240pin Micron Original Part # MT18JSF1G72PDZ-1G9E2 DDR4-ECC SODIMM Manufacturer Samsung Memory Type DDR4

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

Manufacturer Micron Memory Type DDR4 Capacity 16GB Data Transfer Rate 2133MHz Bus Type PC4-17000

Manufacturer Hynix Memory Type DDR4 Capacity 16GB  Data Transfer Rate 2400Mhz  Bus Type PC4-19200

Manufacturer Kingston  Memory Type DDR4 Capacity 8GB  Data Transfer Rate 3200Mhz  Bus Type PC4-25600

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

8GB DDR3 1866Mhz PC3-14900 ECC RDIMM 2Rx8 1.5V 240pin Micron Original Part # MT18JSF1G72PDZ-1G9E2 DDR4-ECC SODIMM Manufacturer Samsung Memory Type DDR4Manufacturer Micron Memory Type DDR3 Capacity 8GB Data Transfer Rate 1866Mhz Bus Type PC3 14900