4GB DDR3 1333Mhz PC3L-10600 ECC RDIMM 1Rx4 1.35V 240pin Vlp/Samsung Original Part # M392B5270DH0-YH9 DDR5-SODIMM-Laptop RAM Manufacturer Heatsink Memory Type DDR4

Manufacturer Heatsink Memory Type DDR4 Capacity 16GB  Data Transfer Rate 3600Mhz  Bus Type  PC4-28800

Manufacturer Kingston  Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2133MHz  Bus Type PC4-17000

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

Manufacturer Crucial Memory Type DDR4 Capacity 4GB Data Transfer Rate 2400MHz Bus Type PC4-19200

4GB DDR3 1333Mhz PC3L-10600 ECC RDIMM 1Rx4 1.35V 240pin Vlp/Samsung Original Part # M392B5270DH0-YH9 DDR5-SODIMM-Laptop RAM Manufacturer Heatsink Memory Type DDR4Manufacturer Samsung Memory Type DDR3 Capacity 4GB Data Transfer Rate 1333Mhz Bus Type PC3L 10600