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Green rectangular circuit board with gold edge connector and black memory chips

OWC

OWC 2S6D42R816GB 16GB DDR4 2666 CL19 2Rx8 260-pin 1.2V Non-ECC SODIMM memory upgrade

SKU CH-5NQV-HVVD2

16 GB DDR4 2666 CL19 SODIMM upgrade for QNAP TS-435XeU, TS-473A, TS-673A, TS-873A and TVS-472XT NAS systems

  • Capacity16GB
  • Type260-Pin DDR4 Non-ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 16GB DDR4 2666 CL19 module boosts multitasking capacity on compatible QNAP NAS
  • JEDEC-standard 1.2V non-ECC SODIMM ensures warranty-safe upgrade without system errors
  • 2Rx8 260-pin design fits TS-435XeU, TS-473A, TS-673A, TS-873A and TVS-472XT
  • Backward compatible with 2400MHz and 2133MHz slots for flexible deployment
  • Single 16GB stick simplifies DIY installation in laptops, mini desktops and micro servers

QNAP NAS memory upgrade

This 16GB DDR4 SODIMM is built for QNAP TS-435XeU, TS-473A, TS-673A, TS-873A and TVS-472XT systems. It replaces OEM part numbers RAM-16GDR4T0-SO-2666, RAM-16GDR4K0-SO-2666 and RAM-16GDR4K1-SO-2666. The module suits administrators expanding capacity in compatible NAS appliances.

Low-voltage operation

Running at 1.2V without a heat spreader, the unbuffered Non-ECC stick draws minimal power and produces negligible noise in a passively cooled chassis. JEDEC-standard timings at CL19 keep thermal output predictable during sustained workloads.

Straightforward installation

The 260-pin form factor slots directly into the supported QNAP models without adapters. Backward compatibility with 2400MHz and 2133MHz systems allows mixed-speed populations. ROHS compliance and OWC testing ensure a warranty-safe upgrade path.

Highlights

  • 16GB DDR4 2666 CL19 module boosts multitasking capacity on compatible QNAP NAS
  • JEDEC-standard 1.2V non-ECC SODIMM ensures warranty-safe upgrade without system errors
  • 2Rx8 260-pin design fits TS-435XeU, TS-473A, TS-673A, TS-873A and TVS-472XT
  • Backward compatible with 2400MHz and 2133MHz slots for flexible deployment
  • Single 16GB stick simplifies DIY installation in laptops, mini desktops and micro servers

Specifications

BrandOWC
Part Number2S6D42R816GB
Capacity16GB
Type260-Pin DDR4 Non-ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemQNAP TS-435XeU
QNAP TS-473A
QNAP TS-673A
QNAP TS-873A
QNAP TVS-472XT

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Questions about this item

How do I install the 260-pin DDR4 SODIMM into my QNAP TS-473A and what step is often missed?

Power off the NAS, unplug it, open the chassis, align the notch on the module with the slot key, press firmly until the side clips click, then replace the cover before restoring power; the step often missed is fully seating the module so both clips engage.

What maintenance or replacement will the 16GB CL19 1.2V module need over time?

No routine maintenance is required; the module has no heat spreader or moving parts, so replacement is only necessary if a memory error appears or you upgrade to a higher capacity.

What limit appears first when the 2Rx8 PC4-21300 memory runs sustained workloads on a TS-873A?

The CAS latency of CL19 at 2666 MT/s sets the timing ceiling; under continuous load the latency bound is reached before bandwidth or voltage limits become a factor.

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