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Green Synology DDR4 memory module with black chips on circuit board

Synology Inc.

Synology D4EU01-4G 4 GB DDR4 NAS Memory Module

SKU CH-NKN8-SVTXW MPN D4EU01-4G

4 GB DDR4 ECC UDIMM module expands memory on compatible Synology NAS devices

  • TypeAccessory
  • Installed Memory4 GB DDR4
  • FeaturesWorks with Select Synology NAS Devices
  • 4 GB DDR4 capacity expands NAS memory
  • ECC UDIMM design protects data integrity
  • Tested for select Synology NAS models
  • Official Synology accessory ensures compatibility
  • New module ready for installation

Synology 4 GB DDR4 ECC UDIMM

This Synology D4EU01-4G module adds four gigabytes of DDR4 ECC memory to compatible desktop NAS units. It is built for owners of select Synology systems who need to expand installed RAM for heavier workloads. The unbuffered DIMM format fits supported bays without extra adapters. Condition is new and ready for installation.

Suitable for Synology NAS owners adding RAM

This upgrade suits administrators running virtual machines, container workloads or large file caches on supported Synology NAS models. The ECC design helps maintain data integrity during sustained operation. Builders whose chassis requires registered DIMMs or a different memory generation should look at other modules. Compatibility is limited to the vendor-qualified device list.

4 GB DDR4 capacity decides fit

The single specification that determines suitability is the four-gigabyte DDR4 ECC unbuffered capacity. Systems needing larger individual modules or a different memory technology cannot use this part. Verify the NAS model against the vendor compatibility list before purchase. The module delivers exactly the stated capacity and type.

Points forts

  • 4 GB DDR4 capacity expands NAS memory
  • ECC UDIMM design protects data integrity
  • Tested for select Synology NAS models
  • Official Synology accessory ensures compatibility
  • New module ready for installation

Caractéristiques

BrandSynology
ModelD4EU01-4G
TypeAccessory
Installed Memory4 GB DDR4
FeaturesWorks with Select Synology NAS Devices
Poids d’expédition0.91 kg
Dimensions du colis178 × 127 × 76 mm

Questions sur cet article

Which Synology NAS models accept this DDR4 ECC UDIMM module?

The module is validated for select Synology NAS devices; check your model's compatibility list before purchase.

How do I install the D4EU01-4G and what is the common mistake?

Power off the NAS, open the chassis, align the notch with the slot key, press firmly until the latches click; the frequent error is not seating the module fully so the latches do not engage.

When should I consider replacing this memory module?

Replace it if the NAS reports memory errors in system logs, fails to boot, or shows unstable behaviour during sustained workloads.

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