4GB DDR3 1333Mhz PC3L-10600 ECC RDIMM 1Rx4 1.35V 240pin Samsung Original Part # M393B5270CH0-YH9 DDR5-SODIMM-Laptop RAM Manufacturer Kingston Memory Type DDR4

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

Manufacturer Samsung  Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2666MHz  Bus Type PC4-21300

Manufacturer Samsung Memory Type DDR3 Capacity 4GB Data Transfer Rate 1066Mhz Bus Type  PC3-8500

Manufacturer Kingston Memory Type DDR3 Capacity 16GB Data Transfer Rate 1066Mhz Bus Type PC3L-8500

Manufacturer Hynix Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2933Mhz  Bus Type PC4-23400

4GB DDR3 1333Mhz PC3L-10600 ECC RDIMM 1Rx4 1.35V 240pin Samsung Original Part # M393B5270CH0-YH9 DDR5-SODIMM-Laptop RAM Manufacturer Kingston Memory Type DDR4Manufacturer Samsung Memory Type DDR3 Capacity 4GB Data Transfer Rate 1333Mhz Bus Type PC3L 10600