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Green circuit board with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 2400 ECC UDIMM Synology Compatible memory upgrade

SKU CH-RSJ0-W0D6Z

16 GB DDR4-2400 ECC UDIMM for Synology NAS, CL17 1.2 V 288-pin single module

  • Total capacity16 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL17
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB DDR4 ECC UDIMM adds reliable capacity to Synology NAS
  • 2400 MHz PC4-19200 speed matches supported system specifications
  • CL17 latency at 1.20 V balances performance and efficiency
  • 2Rx8 288-pin unbuffered design ensures mechanical compatibility
  • Built with Samsung, Micron or Hynix chips and stress-tested for stability

Synology NAS Memory Upgrade

This 16GB DDR4 ECC UDIMM is built for Synology RackStation NAS systems that require error-correcting memory. It targets administrators and small-business users who need reliable capacity expansion for file services, virtualization or backup workloads. The module operates at 2400MHz with CL17 latency and 1.2V power draw.

Unbuffered 288-Pin Design

The stick uses a standard 288-pin DDR4 UDIMM form factor without a heat spreader, so it fits directly into compatible Synology memory slots. Major OEM chips from Samsung, Micron or Hynix are used, and each unit is stress-tested under load before shipping. The 2Rx8 organisation supports dual-rank operation on supported platforms.

Verify Slot Count And Maximum Capacity

Before ordering, confirm how many UDIMM slots your RackStation model provides and what total memory it officially supports. This module is a single 16GB rank; systems limited to 8GB per slot or to a lower aggregate ceiling will not recognise the full capacity. Also ensure the platform accepts DDR4 2400 ECC unbuffered modules rather than registered or non-ECC types.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $136.99
Cheaper than about 63% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $8.56 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

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Specifications

Product
Brand nameNEMIX RAM
Product lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC Unbuffered UDIMM
Part numberME19200-628K1
Total capacity16 GB
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL17
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items16 GB (1 × 16 GB) DDR4 2400 MHz PC4-19200 2Rx8 1.2 V CL17 288-PIN ECC Unbuffered UDIMM

Questions about this item

What DDR4 speed does the PC4-19200 rating cap the module at in practice?

The PC4-19200 rating limits the module to 2400 MT/s even though the series is labelled DDR4 2666MHZ.

Does the 288-pin ECC UDIMM need a heat spreader to fit in a Synology RackStation NAS?

No heat spreader is included; the bare 288-pin UDIMM fits the standard DIMM slots in compatible Synology NAS units.

How is the single 16 GB 2Rx8 module installed, and what step do people often miss?

Power off the NAS, open the chassis, align the notch on the 288-pin edge connector, press firmly until the retention clips click, then power on and verify the new capacity in DSM.

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