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Green circuit board with black memory chips and gold edge connector

OWC

OWC 16GB DDR4 2666 CL19 2Rx8 260-pin 1.2V SODIMM memory upgrade

SKU CH-9Y41-2K7P8

16 GB DDR4 2666 CL19 SODIMM module upgrades Synology DS1520+ NAS systems with JEDEC-standard, low-voltage memory

  • Capacity16GB
  • Type260-Pin DDR4 Non-ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 16 GB DDR4 2666 MHz CL19 boosts Synology DS1520+ responsiveness
  • JEDEC-standard 1.2 V module ensures warranty-safe compatibility
  • 2Rx8 dual-rank layout maximises bandwidth for multitasking
  • Backward compatible with 2400 and 2133 MHz systems
  • 260-pin SODIMM form factor fits laptops, mini desktops and NAS units

Synology DS1520+ 16 GB DDR4 SODIMM

This OWC module is a 16 GB DDR4 2666 CL19 SODIMM built specifically for the Synology DiskStation DS1520+. It arrives new, runs at 1.2 V, and uses a 2Rx8 unbuffered non-ECC layout that matches the OEM specification for that NAS.

Who this suits and who should look elsewhere

It suits administrators who want to expand the DS1520+ memory with a single JEDEC-compliant 16 GB stick. It is not for systems that require ECC registered DIMMs, for builds needing 288-pin UDIMMs, or for anyone whose platform cannot accept 260-pin SODIMM modules.

Deciding specification — 260-pin DDR4 2666 SODIMM

The 260-pin DDR4 2666 SODIMM form factor is the single specification that decides fit; only platforms accepting this exact pin count, voltage, and speed will recognise the module.

Points forts

  • 16 GB DDR4 2666 MHz CL19 boosts Synology DS1520+ responsiveness
  • JEDEC-standard 1.2 V module ensures warranty-safe compatibility
  • 2Rx8 dual-rank layout maximises bandwidth for multitasking
  • Backward compatible with 2400 and 2133 MHz systems
  • 260-pin SODIMM form factor fits laptops, mini desktops and NAS units

Caractéristiques

BrandOWC
Part Number2S6D42R816GB
Capacity16GB
Type260-Pin DDR4 Non-ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStation DS1520+

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Questions sur cet article

How do I install the 260-pin SODIMM in my Synology DiskStation DS1520+ and what step do people often miss?

Power off the NAS and unplug it, then open the memory compartment. Insert the module at an angle until the gold contacts are fully seated, then press down firmly until both side clips click. The step most people miss is verifying both clips have locked — if only one clicks, the module is not fully seated and the NAS will not boot.

What maintenance or replacement will this 16GB DDR4 2666 CL19 module need over its lifetime?

No scheduled maintenance is required for this Non-ECC unbuffered SODIMM. It has no heat spreader, so keep the NAS vents clear of dust to maintain airflow. Replacement is only needed if a memory error appears in DSM logs or the module fails. OWC provides a limited lifetime warranty with advanced replacement if that occurs.

What is the first limit I will hit when the DS1520+ runs sustained workloads with this memory?

The 16GB capacity ceiling is the first hard limit. Because this is a single 2Rx8 module, you cannot add more than one in the DS1520+ slot. Once workloads exceed 16GB the system will swap to disk, causing latency spikes long before the 2666 MT/s speed or CL19 latency becomes a bottleneck.

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