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Two green circuit boards with gold edge connectors and black memory chips

OWC

OWC 16GB DDR4 2666 ECC SODIMM 2x8GB CL19 1.2V memory upgrade

SKU CH-J0WZ-8BN1Z

16 GB dual-channel DDR4 2666 ECC SODIMM kit for compatible ASUSTOR NAS models

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8

Capacity 16GB (2 x 8GB)

  • ECC protection prevents data errors in critical NAS workloads
  • 16 GB dual-channel kit expands multitasking headroom for ASUSTOR models
  • DDR4 2666 CL19 at 1.2 V delivers efficient speed without extra heat
  • JEDEC and RoHS compliant for warranty-safe installation
  • Backward compatible with 2400 and 2133 MHz systems

OWC 16GB DDR4 2666 ECC SODIMM kit

This 16GB kit contains two 8GB DDR4 2666 ECC unbuffered SODIMM modules built for ASUSTOR AS6504RD, AS6504RS, AS6508T, AS6510T and AS6512RD systems. It targets NAS owners who need error-correcting memory for data integrity in micro-server or point-of-sale workloads. Buyers who need non-ECC memory for consumer laptops or who require higher capacities than 16GB should look elsewhere.

Installing the 260-pin modules in compatible

The modules follow the standard SODIMM form factor and seat in the memory slots without tools. Because the kit is JEDEC-standard and ROHS-compliant, it meets OEM specifications for a warranty-safe upgrade. Installers must ensure the chassis is powered down and discharge static before handling the sticks; the only common issue is forgetting to press both retention clips fully until they click.

Sustained operation at 2666MHz with CL19 latency

Under continuous load the ECC circuitry detects and corrects single-bit errors, helping maintain data integrity during long file transfers or database tasks. The 1.2V operating voltage keeps power draw low in always-on NAS enclosures. Backward compatibility with 2400MHz and 2133MHz systems allows the kit to run at lower speeds if the platform requires it.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $107.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.75 per GB
Cheaper than about 59% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2C6D41R8016P
Total capacity16 GB (2 × 8 GB)
Product type260-Pin DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUSTOR AS6504RD
ASUSTOR AS6504RS
ASUSTOR AS6508T
ASUSTOR AS6510T
ASUSTOR AS6512RD

Other versions of this model

5 more in the same range

Questions about this item

How do I verify the kit is running at DDR4 2666 CL19 with ECC active after installation?

Enter the ASUSTOR NAS firmware or BIOS and confirm the memory speed reads 2666 MT/s, CAS latency shows CL19, total capacity is 16 GB, and ECC status reports enabled for both modules.

What ships in the box and is anything else required to install it?

The box contains two 8 GB DDR4 2666 ECC unbuffered SODIMM modules (260-pin, 1.2 V, 1Rx8). No extra parts or tools are needed for installation in the compatible ASUSTOR models.

Which capacity version should I choose for an ASUSTOR AS6510T that currently has 8 GB?

This 16 GB kit (2 x 8 GB) replaces the existing memory and doubles capacity to the maximum supported by the AS6510T, matching the required DDR4 2666 ECC SODIMM specification.

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