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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 32GB DDR4 2666 CL19 ECC SODIMM QNAP TS-h973AX

SKU CH-X423-153YZ

A 32 GB DDR4 2666 CL19 ECC SODIMM built for the QNAP TS-h973AX, running at 1.2 V with 2Rx8 unbuffered chips

  • Capacity32GB
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 32 GB capacity doubles multitasking headroom for QNAP TS-h973AX
  • ECC protection prevents data corruption in NAS workloads
  • DDR4 2666 CL19 speed matches system spec for stable operation
  • 2 V low voltage reduces heat and power draw
  • 260-pin SODIMM form factor fits the NAS slot directly

Single 32GB ECC SODIMM for QNAP TS-h973AX

This module delivers 32GB of DDR4 2666 memory in one 260-pin SODIMM. It is built specifically for the QNAP TS-h973AX and carries ECC protection for data integrity in NAS and micro-server workloads.

JEDEC-standard unbuffered 2Rx8 layout

The stick follows JEDEC PC4-21300 specifications at 1.2V with CL19 latency and a 2Rx8 organisation. No heat spreader is fitted, so it slides into the standard SODIMM slot without clearance concerns.

Low-voltage operation at 1.2V

Running at 1.2V keeps power draw modest and heat output low in the enclosed NAS chassis. Backward compatibility with 2400MHz and 2133MHz systems allows the module to clock down automatically when required.

Highlights

  • 32 GB capacity doubles multitasking headroom for QNAP TS-h973AX
  • ECC protection prevents data corruption in NAS workloads
  • DDR4 2666 CL19 speed matches system spec for stable operation
  • 2 V low voltage reduces heat and power draw
  • 260-pin SODIMM form factor fits the NAS slot directly

Specifications

BrandOWC
Part Number2C6D42R832GB
Capacity32GB
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemQNAP TS-h973AX

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Questions about this item

Does the DDR4 2666 PC4-21300 interface cap the module at 2666 MT/s in the QNAP TS-h973AX?

Yes, the module runs at DDR4 2666 (PC4-21300) with CL19 latency; it is also backwards compatible with 2400 and 2133 MT/s systems.

What physical slot and form factor does this 32 GB ECC SODIMM require?

It uses a 260-pin DDR4 SODIMM form factor, unbuffered, 2Rx8 organisation, 1.2 V, with no heat spreader.

How is the module installed in the TS-h973AX and which step is often missed?

Power off the NAS, open the chassis, align the notch on the 260-pin edge connector, insert at an angle then press down until the side clips click; the step often missed is fully seating both clips so the module locks flat.

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