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Green rectangular DDR4 memory module with gold contacts and black chips, no heat spreader

OWC

OWC 16GB DDR4 2666 CL19 2Rx8 ECC UDIMM 1.2V QNAP 883XU 983XU 1886XU memory upgrade

SKU CH-A2YM-XE0KM

16GB DDR4-2666 ECC UDIMM module upgrades QNAP TS-883XU-RP, TS-983XU, TS-983XU-RP and TS-1886XU-RP NAS systems

  • Capacity16GB
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 16GB DDR4 2666 ECC UDIMM expands QNAP NAS capacity
  • CL19 1.2V JEDEC standard ensures stable error-corrected operation
  • 2Rx8 288-pin unbuffered design fits TS-883XU-RP 983XU 1886XU-RP
  • Backward compatible with 2133 2400 speeds for flexible deployment
  • Replaces QNAP RAM-16GDR4ECT0-UD-2666 part for warranty-safe upgrade

QNAP NAS memory upgrade

This 16GB DDR4 2666 CL19 ECC UDIMM is built for QNAP TS-883XU-RP, TS-983XU, TS-983XU-RP and TS-1886XU-RP systems. It replaces QNAP part numbers RAM-16GDR4ECT0-UD-2666 and RAM-16GDR4ECP0-UD-2666 with a single 2Rx8 module that installs without tools.

Thermals and power draw

The module runs at 1.2V and has no heat spreader, relying on the chassis airflow of the target NAS units. JEDEC-standard DDR4 operation keeps power draw low and acoustic impact negligible inside a rackmount enclosure.

Build integration

The 288-pin unbuffered DIMM fits the native memory slots of the listed QNAP models and is backward compatible with 2133MHz and 2400MHz bus speeds. ECC protection preserves data integrity for ZFS volumes and virtualization workloads. Not suited for non-ECC consumer boards or systems requiring registered DIMMs.

Pontos fortes

  • 16GB DDR4 2666 ECC UDIMM expands QNAP NAS capacity
  • CL19 1.2V JEDEC standard ensures stable error-corrected operation
  • 2Rx8 288-pin unbuffered design fits TS-883XU-RP 983XU 1886XU-RP
  • Backward compatible with 2133 2400 speeds for flexible deployment
  • Replaces QNAP RAM-16GDR4ECT0-UD-2666 part for warranty-safe upgrade

Especificações

BrandOWC
Part Number2E6D42R816GB
Capacity16GB
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemQNAP TS-883XU-RP
QNAP TS-983XU
QNAP TS-983XU-RP
QNAP TS-1886XU-RP

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Perguntas sobre este artigo

How do I install this 288-pin DDR4 2666 CL19 2Rx8 ECC UDIMM in my QNAP TS-883XU-RP and what step do people get wrong?

Power off the NAS, remove the chassis cover, align the notch on the 288-pin module with the slot key, press firmly until both retention clips click — the step people miss is verifying the clips are fully locked before reassembly.

What maintenance or replacement will this 16GB 1.2V ECC Unbuffered module need later?

No scheduled maintenance is required; if a memory error appears in QNAP logs, replace the individual 16GB stick — the module itself has no serviceable parts or wear items.

What limit shows up first on this PC4-21300 CL19 2Rx8 kit under sustained NAS workloads?

The CL19 latency at DDR4 2666 is the first bottleneck during heavy multi-user file serving or virtualization, before bandwidth or voltage headroom becomes a factor.

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