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

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 ECC Unbuffered UDIMM Synology memory upgrade

SKU CH-SR9K-MJTVS

8 GB DDR4 2666 ECC unbuffered UDIMM for Synology NAS with CL19 latency

  • Capacity8GB
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • ECC protection guards data integrity in Synology NAS
  • DDR4 2666 speed matches Synology D4EC-2666-8G spec
  • 2 V operation keeps power draw low
  • 288-pin UDIMM fits standard desktop and NAS slots
  • Single-rank 1Rx8 layout simplifies compatibility

Synology-compatible ECC UDIMM

This 8 GB DDR4 2666 module is built for Synology NAS units that accept unbuffered ECC memory. It targets administrators who need to expand capacity without changing voltage or latency settings. The single-rank 1Rx8 organisation keeps the electrical load light for dense configurations. It is not for systems that require registered DIMMs or non-ECC consumer modules.

Unbuffered 288-pin design

The stick uses a standard 288-pin DDR4 edge connector and runs at 1.20 V, matching the platform specification. No heat spreader is fitted, so clearance inside compact NAS chassis is maximised. Major OEM chips from Samsung Micron or Hynix are selected for supply continuity. Builders who need tall heatsinks or RGB lighting will not find them here.

Single-module package

The box contains one 8 GB UDIMM and no additional cables, brackets or software media. Installation follows the Synology service manual; no proprietary tools are required. Lifetime replacement coverage is backed by the distributor's support team. Users who expect bundled diagnostics or firmware utilities should source those separately.

Points forts

  • ECC protection guards data integrity in Synology NAS
  • DDR4 2666 speed matches Synology D4EC-2666-8G spec
  • 2 V operation keeps power draw low
  • 288-pin UDIMM fits standard desktop and NAS slots
  • Single-rank 1Rx8 layout simplifies compatibility

Caractéristiques

BrandNEMIX RAM
SeriesSynology Compatible Series NAS Memory
ModelSynology DDR4 2666MHZ ECC Unbuffered UDIMM
Part NumberME21300-818K1
Capacity8GB
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSynology
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 ECC UDIMM
Rank1Rx8
FeaturesDDR4 ECC Unbuffered UDIMM Motherboard Compatible
Package Content8GB (1X8GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 288-PIN ECC Unbuffered UDIMM

Questions sur cet article

What DDR4 standard and speed does this 8 GB module run at?

It operates at DDR4 2666 (PC4-21300) with a CAS latency of CL19.

What physical slot and pin count does this UDIMM require?

It fits a standard 288-pin DDR4 UDIMM slot on compatible Synology NAS units.

How is the module installed and what step is often missed?

Power off the NAS, open the chassis, align the notch with the slot key, press firmly until the latches click, then verify the new capacity in DSM.

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