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Green 288-pin DDR4 RDIMM module, bare chips, no heat spreader

OWC

OWC 8GB DDR4 2666 ECC Registered RDIMM CL19 1.2V 1Rx4

SKU CH-0K62-H7QE2

8GB DDR4 ECC registered RDIMM running at 2666 MHz with CL19 latency for compatible servers and NAS systems

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

Capacity 8GB

Rank 1Rx4

  • ECC protection prevents data corruption in servers
  • 2666 MHz DDR4 speed boosts throughput for demanding workloads
  • Registered design stabilises signal integrity on multi-DIMM channels
  • 2 V operation reduces power draw and heat output
  • Compatible with Synology RS18017xs+ and backward compatible to 2133 MHz and 2400 MHz

OWC 8GB DDR4 2666 ECC Registered RDIMM

This OWC module provides 8GB of DDR4 2666 memory with ECC registered operation for servers, workstations and NAS systems. It uses a 288-pin RDIMM form factor running at 1.2V with CL19 latency and a single 1Rx4 rank. The part is designed as a direct replacement for Synology D4RD-2666-8G and D4ER01-8G modules in compatible rackstation units.

Verify registered ECC support

This memory is registered ECC DDR4 and will not work in standard desktop boards or systems that require unbuffered or load-reduced DIMMs. It cannot be mixed with non-registered or ECC LR modules. Confirm your platform accepts 288-pin registered ECC DDR4 at 2666, 2400 or 2133 MT/s and that the memory controller supports the 1Rx4 organisation.

Green PCB module without a heat spreader for dense

The bare green PCB fits tightly spaced DIMM slots in 1U and 2U rackmount servers where tall heat spreaders would block airflow or adjacent modules. Gold-edge contacts on the 288-pin interface ensure reliable seating in vertical or angled sockets. JEDEC and RoHS compliance means the module meets industry electrical and environmental standards for continuous operation.

Privalumai

  • ECC protection prevents data corruption in servers
  • 2666 MHz DDR4 speed boosts throughput for demanding workloads
  • Registered design stabilises signal integrity on multi-DIMM channels
  • 2 V operation reduces power draw and heat output
  • Compatible with Synology RS18017xs+ and backward compatible to 2133 MHz and 2400 MHz

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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Does the box contain anything besides the single 8GB DDR4 2666 RDIMM module?

The upgrade consists of one 8GB DDR4 2666 PC4-21300 CL19 1Rx4 288-pin 1.2V ECC Registered DIMM module; no extra cables, brackets or tools are included.

How do I decide between this 8GB CL19 registered stick and other capacities or speeds listed for my Synology RS18017xs+?

Match the D4RD-2666-8G or D4ER01-8G part numbers; this module runs at 2666 MHz with CL19 latency and is backward compatible with 2133 MHz and 2400 MHz slots, so choose the capacity your NAS chassis and budget allow.

What does the 2666 MHz CL19 rating mean once the module is installed in a Synology RackStation?

The memory operates at 2666 MHz with CAS latency 19, delivering PC4-21300 bandwidth; the registered ECC design provides error correction and signal buffering for stable server and NAS workloads.

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