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Green rectangular DDR4 RDIMM module with black chips and gold contacts

OWC

OWC 8GB DDR4 2666 ECC Registered RDIMM server RAM for Synology SA3400 SA410 SA3600 SA3610

SKU CH-F8KT-VK4WP

8GB DDR4 2666 ECC registered RDIMM for Synology SA3400, SA410, SA3600 and SA3610 NAS systems

  • Capacity8GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 8GB

Rank 1Rx4

  • ECC registered design protects data integrity in NAS workloads
  • 2666 MHz DDR4 speed matches Synology SA3400, SA410, SA3600, SA3610 specs
  • Single 8 GB module simplifies capacity expansion
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

Targeted NAS Upgrade

This 8GB DDR4 2666 ECC Registered RDIMM is built for Synology SA3400, SA410, SA3600 and SA3610 systems. It replaces the D4RD-2666-8G and D4ER01-8G modules with a single 1Rx4 288-pin stick. The module will not work in standard desktop computers and cannot be mixed with unbuffered or load-reduced memory.

Thermals and Power

Operating at 1.2V, the module draws minimal power and runs without a heat spreader. JEDEC-standard signalling keeps thermals predictable inside dense NAS chassis. Backward compatibility with 2133MHz and 2400MHz buses allows the DIMM to clock down automatically when paired with slower slots.

Build and Connectors

The bare 288-pin PCB fits directly into registered DIMM slots on the supported Synology models. ECC registration adds a clock cycle of buffering for signal integrity across fully populated channels. ROHS-compliant assembly and 100% JEDEC compliance make the upgrade warranty-safe for the host system.

Privalumai

  • ECC registered design protects data integrity in NAS workloads
  • 2666 MHz DDR4 speed matches Synology SA3400, SA410, SA3600, SA3610 specs
  • Single 8 GB module simplifies capacity expansion
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

Specifikacijos

BrandOWC
Part Number2R6D41R408GB
Capacity8GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo

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How do I install this 288-pin DDR4 RDIMM in my Synology SA3400, and what step is often missed?

Power off the NAS, open the chassis, align the notch on the module with the slot key, press firmly until both ejector clips lock, then verify the new 8GB capacity in DSM before closing the case.

What maintenance or replacement will this ECC Registered module need over time?

No routine maintenance is required; the module has no heat spreader or moving parts, so replacement is only needed if a memory error appears or capacity must be increased.

What limit appears first when this CL19 2666 MHz RDIMM runs sustained workloads?

The CAS latency of 19 cycles at 2666 MHz sets the response-time floor, so latency-sensitive tasks hit that timing boundary before bandwidth saturates.

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