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Two green circuit boards with black chips, no heat spreader, SODIMM form factor

OWC

OWC 16GB (2x8GB) DDR4 2666 ECC SODIMM for DS3018xs DS3622xs+

SKU CH-YAF3-5RNB9

16 GB dual-channel DDR4-2666 ECC SODIMM kit validated for Synology DS3018xs and DS3622xs+ NAS systems

  • Capacity16GB (2 x 8GB)
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 16GB (2 x 8GB)

  • ECC protection guards data integrity in Synology DS3018xs and DS3622xs+
  • 16 GB kit (2 × 8 GB) expands capacity for multitasking workloads
  • DDR4 2666 CL19 at 1.2 V matches system memory specs
  • 260-pin unbuffered SODIMM fits NAS slots without adapters
  • Backward compatible with 2400 MHz and 2133 MHz platforms

NAS Memory Upgrade

This 16 GB kit contains two 8 GB DDR4 2666 ECC SODIMM modules built for Synology DiskStation DS3018xs and DS3622xs+ units. It targets administrators who need error-correcting memory to protect data integrity in always-on NAS workloads.

Build and Compatibility

Each stick uses a 260-pin SO-DIMM form factor with unbuffered 1Rx8 organisation and runs at 1.2 V without a heat spreader. JEDEC and RoHS compliance ensures the modules meet OEM specifications for warranty-safe installation in the supported DiskStation models.

Thermals and Power

Standard 1.2 V DDR4 operation keeps power draw low inside the compact NAS chassis. Passive cooling relies on system airflow, so the modules add no acoustic noise and suit the thermal envelope of the DS3018xs and DS3622xs+ platforms.

Highlights

  • ECC protection guards data integrity in Synology DS3018xs and DS3622xs+
  • 16 GB kit (2 × 8 GB) expands capacity for multitasking workloads
  • DDR4 2666 CL19 at 1.2 V matches system memory specs
  • 260-pin unbuffered SODIMM fits NAS slots without adapters
  • Backward compatible with 2400 MHz and 2133 MHz platforms

Specifications

BrandOWC
Part Number2C6D41R8016P
Capacity16GB (2 x 8GB)
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStationDS3018xs
Synology DiskStationDS3622xs+

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Questions about this item

What speed does the DDR4 2666 SODIMM run at in a DS3018xs?

The kit operates at 2666 MHz (PC4-21300) with CL19 latency; if the NAS only supports 2400 MHz or 2133 MHz the modules will automatically run at the lower speed.

Does the 260-pin ECC SODIMM fit the DS3622xs+ memory slot?

Yes, each 8 GB module uses the standard 260-pin DDR4 SODIMM form factor required by the DS3622xs+ and DS3018xs.

How do I install the two 8 GB sticks in the DS3018xs without triggering a memory error?

Power off the NAS, remove the side cover, insert both modules firmly until the retaining clips click, then power on; the common mistake is not seating the modules fully so the clips do not latch.

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