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Green circuit board with black memory chips and gold edge connector

OWC

OWC 4GB DDR4 2666 CL19 1Rx8 260-pin 1.2V SODIMM memory upgrade

SKU CH-A94N-X74Z4

A 4 GB DDR4 SODIMM running at 2666 MHz CL19 for Synology DS425+, DS725+, DS925+, DS1825+ and DS1825xs+ NAS units

  • Capacity4GB
  • Type260-Pin DDR4 Non-ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 4GB capacity expands multitasking headroom on compatible NAS
  • DDR4 2666 CL19 timing matches Synology OEM specs
  • 2V low-voltage operation reduces system power draw
  • JEDEC and ROHS compliant for warranty-safe upgrades
  • Backward compatible with 2400 and 2133 MHz systems

System-specific DDR4 for Synology NAS

This 4GB SODIMM is built for Synology DiskStation models DS425+, DS725+, DS925+, DS1825+ and DS1825xs+. It delivers a straightforward capacity increase for compatible network-attached storage devices.

Tool-free slot access with JEDEC compliance

The module fits the standard 260-pin socket found in the listed units, so installation only requires opening the chassis and pressing the stick into place. Because it follows JEDEC and RoHS standards, it will not void the original system warranty.

4GB single-rank non-ECC with 2666 MT/s headroom

The stick runs at PC4-21300 CL19 1.2V and is backward compatible with 2400 and 2133 MT/s buses, so it operates reliably at the platform's native speed. Systems needing ECC protection or larger single-module capacities will not be served by this part.

商品特色

  • 4GB capacity expands multitasking headroom on compatible NAS
  • DDR4 2666 CL19 timing matches Synology OEM specs
  • 2V low-voltage operation reduces system power draw
  • JEDEC and ROHS compliant for warranty-safe upgrades
  • Backward compatible with 2400 and 2133 MHz systems

商品規格

BrandOWC
Part Number2S6D41R804GB
Capacity4GB
Type260-Pin DDR4 Non-ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStation DS425+
Synology DiskStation DS1825+
Synology DiskStation DS1825xs+
Synology DiskStation DS725+
Synology DiskStation DS925+

商品問答

How can I verify the OWC 4GB DDR4 2666 CL19 SODIMM is running correctly after installing it in my Synology DS925+?

After installation, power on the NAS and open DSM. Go to Control Panel > Info Center > System to confirm the total memory now shows the original capacity plus 4GB and the status reads Normal.

What comes in the box with the OWC 2S6D41R804GB module and what must I source separately?

The package contains the single 4GB 260-pin DDR4 2666 CL19 1.2V SODIMM. No tools, screws or additional modules are included; purchase any extra sticks separately if your model has multiple slots.

Which capacity should I choose between the 4GB D4NESO-2666-4G replacement and larger kits for my DS1825xs+?

This part number 2S6D41R804GB is a single 4GB module. Select it when you only need to add 4GB or replace one failed stick; choose a higher-capacity kit if your workload demands more total memory.

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