8GB DDR3 1600Mhz PC3L-12800 ECC RDIMM 2Rx8 1.35V 240pin Hynix Original Part # HMT41GR7AFR8A-PB DDR5-SODIMM-Laptop RAM Manufacturer Sumsung Memory Type DDR4

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

Manufacturer Micron  Memory Type DDR4 Capacity 256GB  Data Transfer Rate 3200Mhz  Bus Type PC4-25600

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

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

8GB DDR3 1600Mhz PC3L-12800 ECC RDIMM 2Rx8 1.35V 240pin Hynix Original Part # HMT41GR7AFR8A-PB DDR5-SODIMM-Laptop RAM Manufacturer Sumsung Memory Type DDR4Manufacturer Hynix Memory Type DDR3 Capacity 8GB Data Transfer Rate 1600Mhz Bus Type PC3L 12800