16GB DDR4 2666Mhz PC4-21300 ECC RDIMM 1Rx4 1.2V 288Pin Sumsung Original Part # M393A2K40BB2-CTD DDR3-ECC SODIMM Desktop Manufacturer Crucial Memory Type DDR3

Manufacturer Crucial Memory Type DDR3 Capacity 4GB Data Transfer Rate 1600Mhz Bus Type PC3L-12800

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

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

Manufacturer Samsung  Memory Type DDR3 Capacity 8GB  Data Transfer Rate 1600Mhz Bus Type PC3L-12800

Data Transfer Rate 2400Mhz Bus Type PC4-19200

16GB DDR4 2666Mhz PC4-21300 ECC RDIMM 1Rx4 1.2V 288Pin Sumsung Original Part # M393A2K40BB2-CTD DDR3-ECC SODIMM Desktop Manufacturer Crucial Memory Type DDR3Manufacturer Sumsung Memory Type DDR4 Capacity 16GB Data Transfer Rate 2666Mhz Bus Type PC4 21300