CMS 4GB (1X4GB) DDR4 21300 2666MHz Non ECC DIMM Memory Ram Upgrade Replacement for ASRock® Server Board B550D4U, X570D4U-2X570D4U, Z490D4U-2Z490D4U - D23

4GB Total memory using 1pc of 4GB DDR4, 2666MHz, Non-ECC, CL19, 2R, X8, 1.2V, Unbuffered, DIMM, 288-pin

Max Capacity: 128GB

Sockets: 4

Mixing modules or kits of different speeds/timings/voltages is not recommended and may cause instability If a K4 “Kit of 4” part is not listed for a particular speed/capacity, it is not recommended to install two K2 “Kit of 2” parts together. K4 kits are only listed if the configuration has been tested as stable. C

Compatible with: ASRock Server Board B550D4U, X570D4U-2X570D4U, Z490D4U-2Z490D4U

Lifetime exchange or repair warranty against manufacturing defects by Computer Memory Solutions. Manufactured by Computer Memory Solutions. We don't use OEM or Generic Modules to avoid incompatibility. In most cases, you can mix manufacturer parts, however, all memory in the system will run at the slowest performance of the installed modules or CPU/processor capability.

To maximize performance, we recommend that you install your memory modules in matched pairs. A 64-bit Operating System is required to utilize more than 4GB of memory.