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Green circuit board with black memory chips, gold edge connectors, no heat spreader

OWC

OWC 8GB DDR4 2666 CL19 ECC UDIMM 1Rx8 1.2V 288-pin for Synology RS3618xs

SKU CH-X12K-X4NJY

8GB DDR4 2666 ECC UDIMM module with CL19 latency, 1.2V operation and 1Rx8 rank for Synology RS3618xs NAS upgrades

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

Capacity 8GB

  • 8 GB capacity expands NAS memory for heavier workloads
  • DDR4 2666 MHz CL19 speed matches system requirements
  • ECC protection detects and corrects single-bit data errors
  • 2 V low-voltage operation reduces power draw and heat
  • 288-pin UDIMM form factor fits Synology RS3618xs slots directly

8 GB DDR4 ECC UDIMM for Synology RS3618xs

This single 8 GB DDR4 2666 CL19 ECC unbuffered UDIMM is built for the Synology RackStation RS3618xs. It adds error-correcting memory capacity to a NAS that runs 24/7 workloads such as virtualisation, surveillance or multi-user file services.

JEDEC-standard 288-pin unbuffered module

The stick follows JEDEC DDR4 2666 (PC4-21300) timings at 1.2 V and uses a 1Rx8 layout without a heat spreader. Its 288-pin UDIMM edge connector drops straight into the RS3618xs memory slots, and the module is also rated for 2133 MHz and 2400 MHz backward compatibility.

Verify slot count and maximum capacity first

Check how many DIMM slots your RS3618xs has free and confirm the system’s supported total memory limit before ordering. This module is ECC unbuffered only; it will not work in platforms that require registered or non-ECC memory.

Ciri-ciri utama

  • 8 GB capacity expands NAS memory for heavier workloads
  • DDR4 2666 MHz CL19 speed matches system requirements
  • ECC protection detects and corrects single-bit data errors
  • 2 V low-voltage operation reduces power draw and heat
  • 288-pin UDIMM form factor fits Synology RS3618xs slots directly

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 RackstationRS3618xs

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Does the DDR4 2666 PC4-21300 interface cap the speed if my RS3618xs only supports 2133 or 2400 MHz?

No. The module is backward compatible with 2133 MHz and 2400 MHz and will run at the highest speed the Synology RackStation RS3618xs allows.

What physical slot and form factor does this 8 GB stick need to fit in the RS3618xs?

It uses a standard 288-pin DDR4 UDIMM form factor and installs directly into the RS3618xs memory slots.

What is the correct way to seat this unbuffered ECC DIMM so the RS3618xs recognises the full 8 GB?

Align the notch with the slot key, press straight down until both retention clips click, then verify 8 GB appears in DSM after reboot.

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