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Green 260-pin DDR4 ECC SODIMM memory module with black chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 ECC SODIMM 2Rx8 1.2V for Synology DS2419+ DS2419+II memory upgrade

SKU CH-C2EZ-M22BX

16GB DDR4 2666MHz CL19 ECC SODIMM for Synology DS2419+ and DS2419+II NAS upgrades

  • Capacity16GB (1 x 16GB)
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 16GB DDR4 2666MHz ECC SODIMM expands Synology DS2419+ and DS2419+II capacity
  • JEDEC-standard PC4-21300 CL19 1.2V module ensures warranty-safe compatibility
  • Unbuffered 2Rx8 260-pin design installs easily in supported NAS systems
  • Backward compatible with 2400MHz and 2133MHz slots for flexible deployment
  • RoHS-compliant build tested to meet OEM specifications for reliable operation

Compatible NAS upgrade

This 16GB DDR4 SODIMM is built for Synology DiskStation DS2419+ and DS2419+II systems. It adds ECC protection to a single slot. The module suits administrators who need reliable capacity for virtualisation or heavy file workloads. It is not for buyers who want non-ECC memory or a different form factor.

Slot-ready integration

The 260-pin stick drops straight into an empty SODIMM socket without extra cables or brackets. Running at 1.2V, it keeps the power budget low and leaves headroom for other components. Backward compatibility with 2400MHz and 2133MHz buses lets it work in mixed-speed configurations. Builders who need registered DIMMs or a 288-pin desktop form factor cannot use this module.

Cool, quiet operation

No heat spreader means the module relies on the NAS chassis airflow, which is sufficient at the rated 1.2V. ECC logic adds minimal latency while correcting single-bit errors on the fly. Power draw stays modest under typical multi-user loads. Environments without active case ventilation may see higher temperatures than specified.

Highlights

  • 16GB DDR4 2666MHz ECC SODIMM expands Synology DS2419+ and DS2419+II capacity
  • JEDEC-standard PC4-21300 CL19 1.2V module ensures warranty-safe compatibility
  • Unbuffered 2Rx8 260-pin design installs easily in supported NAS systems
  • Backward compatible with 2400MHz and 2133MHz slots for flexible deployment
  • RoHS-compliant build tested to meet OEM specifications for reliable operation

Specifications

BrandOWC
Part Number2C6D42R816GB
Capacity16GB (1 x 16GB)
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStationDS2419+
Synology DiskStationDS2419+II

Questions about this item

Will the 2666MHz CL19 timing become the bottleneck during long file transfers on the DS2419+II?

The module runs at DDR4 2666 PC4-21300 CL19, so sustained throughput is limited by that 2666MHz data rate and 19-cycle latency.

Does the unbuffered ECC SODIMM generate extra heat or fan noise when the NAS runs 24/7?

Operating at 1.2V without a heat spreader, the 16GB stick stays within standard DDR4 thermal limits and adds no audible noise to the DS2419+ chassis.

Must the DS2419+ already have an empty 260-pin DDR4 slot to accept this 16GB upgrade?

Yes, the module is a single 260-pin DDR4 ECC SODIMM, so a free SO-DIMM slot in the Synology unit is required for installation.

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