4GB DDR4 2666MHz PC4-21300 NON ECC UNBUFFERED DIMM 1Rx16 1.2V 288Pin Samsung Original Part # M378A5244CB0-CTD capacity:4GB Manufacturer Hynix Memory Type DDR5

Manufacturer Hynix Memory Type DDR5 Capacity 16GB  Data Transfer Rate 4800Mhz  Bus Type PC5-38400

Manufacturer Cisco Memory Type DDR4 Capacity 64GB Data Transfer Rate 2933Mhz Bus Type  PC4-21300

Manufacturer Kingston  Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2666Mhz  Bus Type  PC4-21300

Manufacturer Micron Memory Type DDR4 Capacity 64GB Data Transfer Rate 2666Mhz Bus Type PC4-21300

Manufacturer HPE  Memory Type DDR4 Capacity 32GB  Data Transfer Rate 2933MHz  Bus Type PC4-23400

4GB DDR4 2666MHz PC4-21300 NON ECC UNBUFFERED DIMM 1Rx16 1.2V 288Pin Samsung Original Part # M378A5244CB0-CTD capacity:4GB Manufacturer Hynix Memory Type DDR5Manufacturer Samsung Memory Type DDR4 Capacity 4GB Data Transfer Rate 2666MHz Bus Type PC4 21300