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Green circuit board with black memory chips, 260-pin DDR4 SODIMM form factor, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 ECC SODIMM 2Rx8 1.2V Synology DS1823+ DS2422+ memory upgrade

SKU CH-ZFXA-JRDG3

16GB DDR4 2666MHz ECC SODIMM adds 16GB to Synology DS1823+ or DS2422+ NAS

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16GB DDR4 2666MHz CL19 ECC SODIMM expands DS1823+ and DS2422+ NAS capacity
  • JEDEC-standard PC4-21300 module ensures warranty-safe, compliant upgrade
  • 2V unbuffered 2Rx8 design reduces power draw in micro-server environments
  • Backward compatible with 2400MHz and 2133MHz systems for flexible deployment
  • Single 260-pin stick simplifies DIY installation in compatible Synology DiskStation units

OWC 16GB DDR4 ECC SODIMM for Synology NAS

This 16GB DDR4 2666MHz CL19 ECC unbuffered SODIMM is designed for Synology DiskStation DS1823+ and DS2422+ systems. It adds 16GB of error-correcting memory to compatible NAS units. The module suits administrators who need data integrity for storage workloads.

Tool-free slot installation

The 260-pin SODIMM inserts directly into the NAS memory slot without tools. It operates at 1.2V and is backward compatible with 2400MHz and 2133MHz systems. The only common issue is forgetting to power down the unit fully before inserting the module.

Sustained ECC operation at JEDEC standard speeds

Under continuous load the memory maintains 2666MHz CL19 timing with ECC active, correcting single-bit errors without performance penalty. The 2Rx8 organisation supports steady throughput for multi-user file services and virtualisation tasks. It is not for systems that require registered DIMMs or non-ECC memory.

How it compares

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

Price $109.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (1 × 16 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.87 per GB
Cheaper than about 58% 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 number2C6D42R816 GB
Total capacity16 GB (1 × 16 GB)
Product type260-Pin DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology DiskStationDS1823+
Synology DiskStationDS2422+

Questions about this item

How can I confirm the 16GB DDR4 2666MHz ECC SODIMM is recognised at the correct speed after installing it in my DS1823+?

After installation, open DSM Control Panel, go to Info Center > System, and verify the memory section shows 16GB running at 2666MHz with ECC enabled.

What comes in the box with the OWC 2C6D42R816GB module and what else might I need for the DS2422+?

The package contains one 16GB 260-pin DDR4 2666 CL19 ECC unbuffered 2Rx8 SODIMM at 1.2V. No extra parts are required if a slot is free; buy a second identical module to populate both channels.

Should I choose the 16GB 2666MHz CL19 ECC SODIMM or a lower-speed version for my DS1823+?

Select this 2666MHz CL19 module; it is JEDEC-standard and backwards compatible with 2400MHz and 2133MHz, so it will run at the highest speed the NAS supports.

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