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Green circuit board with black memory chips and gold edge connector

OWC

OWC 16GB DDR4 3200 CL22 2Rx8 UDIMM for QNAP TS-h977XU-RP TS-h1277XU-RP TS-h1677XU-RP TS-h2477XU-RP

SKU CH-4Y9H-CKRF4

A 16 GB DDR4 3200 CL22 2Rx8 UDIMM validated for QNAP TS-h977XU-RP, TS-h1277XU-RP, TS-h1677XU-RP and TS-h2477XU-RP NAS systems

  • Capacity16GB
  • Type288-Pin DDR4 Non-ECC UDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCNo
  • 16 GB DDR4 3200 MHz expands NAS capacity for heavier workloads
  • CL22 latency at 1.2 V keeps power draw low while maintaining speed
  • 2Rx8 288-pin unbuffered design fits QNAP TS-h977XU-RP TS-h1277XU-RP TS-h1677XU-RP TS-h2477XU-RP
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 2400 2666 2933 MHz systems

QNAP TS-h Series Memory Upgrade

This 16GB DDR4 module is built for QNAP TS-h977XU-RP, TS-h1277XU-RP, TS-h1677XU-RP and TS-h2477XU-RP NAS units. It targets administrators who need to expand system memory for virtualization or heavy multi-user workloads without replacing the appliance.

16GB CL22 Headroom and Limits

The single rank 2Rx8 stick runs at 3200MHz PC4-25600 with CAS 22 latency at 1.2V. It adds comfortable headroom for concurrent VMs and large file caches, but a single 16GB module will not satisfy configurations that require populated quad-channel sets or total capacities beyond what one slot provides.

288-Pin UDIMM Build and Fit

The unbuffered non-ECC DIMM uses standard 288-pin gold contacts and operates without a heat spreader, keeping the profile low for dense rack chassis. JEDEC and RoHS compliance ensures the module seats cleanly in the NAS slots and maintains the original system warranty during upgrades.

Highlights

  • 16 GB DDR4 3200 MHz expands NAS capacity for heavier workloads
  • CL22 latency at 1.2 V keeps power draw low while maintaining speed
  • 2Rx8 288-pin unbuffered design fits QNAP TS-h977XU-RP TS-h1277XU-RP TS-h1677XU-RP TS-h2477XU-RP
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 2400 2666 2933 MHz systems

Specifications

BrandOWC
Part Number3U2D42R816GB
Capacity16GB
Type288-Pin DDR4 Non-ECC UDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemQNAP TS-h977XU-RP
QNAP TS-h1277XU-RP
QNAP TS-h1677XU-RP
QNAP TS-h2477XU-RP

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Questions about this item

Will this 16GB DDR4 3200 CL22 module run with my existing 2133MHz or 2400MHz sticks in the TS-h1277XU-RP?

The module is backward compatible with 2133MHz, 2400MHz, 2666MHz and 2933MHz speeds. All installed DIMMs will operate at the speed of the slowest module present.

How can I confirm the 2Rx8 1.2V UDIMM is detected correctly after installation in the TS-h1677XU-RP?

Check the QNAP system information or resource monitor; it should report 16GB at 3200MHz with CL22 timings and show the module as non-ECC unbuffered memory.

Does the package include only the single 288-pin DIMM or are tools and cables supplied?

The box contains one 16GB 288-pin DDR4 UDIMM module. No tools, cables or additional hardware are included.

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