4GB DDR3 1333Mhz PC3-10600 ECC RDIMM 1Rx4 1.5V 240pin Hynix Original Part # HMT351R7EFR4C-H9 DDR3-RDIMM Server Manufacturer Samsung Memory Type DDR4

Manufacturer Samsung  Memory Type DDR4 Capacity 4GB  Data Transfer Rate 2666Mhz  Bus Type PC4-21300

Manufacturer Hynix Memory Type DDR4 Capacity 4GB  Data Transfer Rate 2666MHz  Bus Type  PC4-21300

Manufacturer Micron  Memory Type DDR3 Capacity 8GB  Data Transfer Rate 1600Mhz  Bus Type  PC3-12800

Manufacturer Samsung  Memory Type DDR4 Capacity 4GB  Data Transfer Rate 2666MHz  Bus Type PC4-21300

Manufacturer Elpida  Memory Type DDR3 Capacity 4GB  Data Transfer Rate 1600Mhz  Bus Type PC3-12800

4GB DDR3 1333Mhz PC3-10600 ECC RDIMM 1Rx4 1.5V 240pin Hynix Original Part # HMT351R7EFR4C-H9 DDR3-RDIMM Server Manufacturer Samsung Memory Type DDR4Manufacturer Hynix Memory Type DDR3 Capacity 4GB Data Transfer Rate 1333Mhz Bus Type PC3 10600