OWC 8GB DDR4 2666 ECC UDIMM CL19 1Rx8 1.2V for Synology RS2821RP+

System-Specific DDR4 ECC Module

This 8 GB DDR4 2666 ECC UDIMM is built for the Synology RackStation RS2821RP+ and runs at 1.2 V with CL19 latency. The single-rank 1Rx8 design plugs into a 288-pin slot and meets JEDEC PC4-21300 specifications for warranty-safe upgrades.

Capacity and Headroom

An 8 GB stick adds usable memory for multi-user file services, Docker containers and surveillance workloads on the RS2821RP+. The module down-clocks to 2133 MHz or 2400 MHz if the system requires it, but it cannot exceed the platform’s maximum supported capacity or populate unsupported slots.

Build Integration

The unbuffered ECC DIMM fits standard UDIMM sockets without a heat spreader, leaving clearance for adjacent components. It requires a platform that accepts 288-pin DDR4 ECC UDIMMs at 1.2 V and will not work in systems needing registered, load-reduced or non-ECC memory.