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Single green 260-pin DDR4 SODIMM module with black chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 ECC SODIMM memory upgrade

SKU CH-AQGF-8AF73

16 GB DDR4 2666 MHz CL19 ECC SODIMM module for Synology DS1618+ NAS upgrades

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB DDR4 ECC SODIMM adds capacity to Synology DS1618+
  • 2666 MHz PC4-21300 CL19 speed matches system specs
  • 2 V low-voltage design keeps power draw minimal
  • 260-pin unbuffered 2Rx8 module fits NAS slot directly
  • JEDEC and RoHS compliant for warranty-safe upgrade

Synology DS1618+ Memory Upgrade

This OWC module adds 16GB of DDR4 ECC SODIMM memory to a Synology DiskStation DS1618+. It runs at 2666MHz with CL19 latency and operates at 1.2V. The unbuffered 2Rx8 design fits the 260-pin slot and meets JEDEC standards for reliable NAS operation.

Replacing Lower-Capacity or Slower Modules

The upgrade replaces any existing 2400MHz or 2133MHz SODIMMs and runs at the higher 2666MHz speed where supported. The performance jump is worth it when the NAS handles multiple users, virtual machines, or large file transfers that exceed current memory capacity.

Verify Slot Availability and Maximum Supported RAM

Check how many SODIMM slots the DS1618+ has free and confirm the total memory limit for your specific unit. Ensure the system accepts 16GB unbuffered ECC modules before ordering.

How it compares

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

Price $113.99
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 $7.12 per GB
Cheaper than about 57% 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 DiskStationDS1618+

Questions about this item

Does the 260-pin SODIMM slot in a Synology DS1618+ accept this 16GB DDR4 2666MHz CL19 ECC module?

Yes, the module is a 260-pin DDR4 ECC SODIMM built to JEDEC standard and tested for the DS1618+ platform.

What is the correct way to seat the module in the DS1618+ so the ECC function works?

Power off the NAS, open the chassis, align the notch on the 260-pin edge connector, press firmly until the side clips click, then power on and verify 16GB appears in DSM.

Will this ECC SODIMM need any firmware update or battery replacement during its service life?

No firmware or battery is required; the module is a passive DRAM component rated for 1.2V operation and covered by OWC's limited lifetime warranty.

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