4GB DDR4 2666MHz PC4-21300 NON ECC UNBUFFERED DIMM 1Rx8 1.2V 288Pin Samsung Original Part # M378A5143TB2-CTD DDR5-ECC UNBUFF Manufacturer Samsung Memory Type DDR4

Manufacturer Samsung Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2400MHz  Bus Type PC4-19200

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

Manufacturer Samsung  Memory Type DDR4 Capacity 16GB  Data Transfer Rate 3200Mhz  Bus Type PC4-25600

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

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

4GB DDR4 2666MHz PC4-21300 NON ECC UNBUFFERED DIMM 1Rx8 1.2V 288Pin Samsung Original Part # M378A5143TB2-CTD DDR5-ECC UNBUFF Manufacturer Samsung Memory Type DDR4Manufacturer Samsung Memory Type DDR4 Capacity 4GB Data Transfer Rate 2666MHz Bus Type PC4 21300