NEMIX RAM 32GB DDR4 2666 ECC RDIMM Synology Compatible Series NAS Memory

Synology NAS 32 GB DDR4 module

This registered ECC RDIMM is built for Synology NAS units that require DDR4 2666 memory. It delivers 32 GB of error-correcting capacity for data integrity in always-on storage appliances. IT teams and small-business owners use it to expand memory headroom for virtualization, file services and backup workloads. The module ships new and is validated for the compatible Synology platforms listed by the vendor.

Registered ECC with CL19 timing

The stick runs at DDR4 2666 (PC4-21300) with a CAS latency of 19 at 1.20 V. It uses a 2Rx4 organisation on 288-pin RDIMM form factor and includes on-board register circuitry for signal integrity. ECC and registered buffering are mandatory for the target NAS models; non-ECC or unbuffered DIMMs will not function in these systems. Chipset components come from major OEM suppliers such as Samsung, Micron or Hynix.

Tool-less DIMM slot insertion

Installation consists of opening the NAS chassis, aligning the 288-pin edge connector with the memory slot and pressing until the retention clips engage. No heat spreader is fitted, so clearance is minimal in compact bays. The most common issue is mixing this registered ECC module with unbuffered or non-ECC memory, which prevents the system from posting. Always populate slots according to the NAS manufacturer's population rules.