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Green 288-pin DDR4 ECC UDIMM module with black chips, no heat spreader

OWC

OWC 8GB DDR4 2666MHz ECC UDIMM CL19 1.2V 1Rx8 Synology RS2418+/RP+

SKU CH-S4S8-M3R1K

An 8 GB DDR4 2666 MHz ECC UDIMM for Synology RS2418+ and RS2418RP+ NAS

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

Capacity 8GB

  • 8GB capacity expands NAS storage headroom
  • DDR4 2666MHz speed matches Synology RS2418+/RP+ spec
  • ECC protection guards data integrity in RAID arrays
  • 2V operation keeps power draw low
  • JEDEC-standard build ensures warranty-safe upgrade

Compatible Synology RS2418+ and RS2418RP+

This 8GB DDR4 ECC UDIMM is built specifically for Synology RackStation RS2418+ and RS2418RP+ systems. It delivers 2666MHz speed with CL19 latency at 1.2V. The unbuffered 1Rx8 design fits standard 288-pin DIMM slots. It targets NAS owners who need a validated memory upgrade for these models.

Sustained operation with ECC error correction

ECC functionality detects and corrects single-bit errors during continuous workloads. The module runs at JEDEC-standard 1.2V without a heat spreader, relying on system airflow. Backward compatibility with 2133MHz and 2400MHz buses allows stable operation if the platform downclocks. This supports data integrity in always-on NAS environments.

Verify slot count and maximum capacity first

Confirm your RackStation has an available 288-pin DDR4 UDIMM slot before ordering. Check the Synology specifications for the maximum supported memory per slot and total system limit. This single 8GB module adds capacity only if the chassis and firmware allow further expansion.

Ciri-ciri utama

  • 8GB capacity expands NAS storage headroom
  • DDR4 2666MHz speed matches Synology RS2418+/RP+ spec
  • ECC protection guards data integrity in RAID arrays
  • 2V operation keeps power draw low
  • JEDEC-standard build ensures warranty-safe upgrade

Spesifikasi

BrandOWC
Part Number2E6D41R808GB
Capacity8GB
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS2418+
Synology RackstationRS2418RP+

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How much heat and power does the 1.2V DDR4 2666MHz ECC UDIMM draw when the Synology RS2418+ runs continuously?

The module operates at 1.2V without a heat spreader, so it adds minimal thermal load and power draw to a Synology RS2418+ or RS2418RP+ running 24/7.

What must my Synology RackStation already have for this 288-pin 8GB ECC UDIMM to work?

Your RS2418+ or RS2418RP+ needs a free 288-pin DDR4 UDIMM slot and a BIOS that supports ECC unbuffered memory at 2666MHz.

Will this CL19 2666MHz stick run stably alongside the 2133MHz or 2400MHz modules already in my RS2418RP+?

Yes — the DIMM is backward compatible with 2133MHz and 2400MHz, so it will downclock automatically to match the slower modules in your RackStation.

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