4GB DDR3 1066Mhz PC3-8500 ECC RDIMM 4Rx8 1.5V 240pin Samsung Original Part # M393B5173DZ1-CF8 DDR5-SODIMM-Laptop RAM Manufacturer Kingston Memory Type DDR4

Manufacturer Kingston  Memory Type DDR4 Capacity 8GB Data Transfer Rate 2400Mhz  Bus Type  PC4-19200

Manufacturer Kingston Memory Type DDR4 Capacity 16GB Data Transfer Rate 2400MHz Bus Type PC4-19200

Manufacturer Samsung  Memory Type DDR4 Capacity 4GB  Data Transfer Rate 2400Mhz  Bus Type  PC4-19200

Manufacturer Hynix Memory Type DDR4 Capacity 16GB  Data Transfer Rate 2133Mhz  Bus Type PC4-17000

Manufacturer Micron Memory Type DDR4 Capacity 4GB Data Transfer Rate 3200MHz Bus Type PC4-25600

4GB DDR3 1066Mhz PC3-8500 ECC RDIMM 4Rx8 1.5V 240pin Samsung Original Part # M393B5173DZ1-CF8 DDR5-SODIMM-Laptop RAM Manufacturer Kingston Memory Type DDR4Manufacturer Samsung Memory Type DDR3 Capacity 4GB Data Transfer Rate 1066Mhz Bus Type PC3 8500