4GB DDR4 2133Mhz PC4-17000 ECC UNBUFFERED DIMM 1Rx8 1.2V 288Pin Hynix Original Part # HMA451U7AFR8N-TF capacity:4GB Data Transfer Rate 2666Mhz Bus

Data Transfer Rate 2666Mhz  Bus Type PC4-21300

Manufacturer Kingston Memory Type DDR4 Capacity 32GB Data Transfer Rate 2933Mhz Bus Type PC4-23400

Manufacturer Samsung Memory Type DDR4 Capacity 32GB Data Transfer Rate 2933Mhz Bus Type PC4-23400

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

Manufacturer Kingston Memory Type DDR4 Capacity 32GB  Data Transfer Rate 2133Mhz Bus Type PC4-17000

4GB DDR4 2133Mhz PC4-17000 ECC UNBUFFERED DIMM 1Rx8 1.2V 288Pin Hynix Original Part # HMA451U7AFR8N-TF capacity:4GB Data Transfer Rate 2666Mhz BusManufacturer Hynix Memory Type DDR4 Capacity 4GB Data Transfer Rate 2133Mhz Bus Type PC4 17000