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Green rectangular SODIMM module with gold edge connectors and black memory chips

Synology Inc.

Synology D4ES02-4G 4GB DDR4 ECC SODIMM NAS

SKU CH-K20Q-BZ8K1 MPN D4ES02-4G

4GB DDR4 ECC SODIMM module upgrades compatible Synology DS2422+ NAS systems

  • TypeAccessory
  • FeaturesRAM DDR4 ECC Unbuffered SODIMM 4GB Applied Models: 22 series

Option D4ES02-4G

  • ECC protection guards data integrity on your NAS
  • DDR4 SODIMM fits DS2422+ memory slot directly
  • Unbuffered design keeps latency low for responsive operation
  • Four-gigabyte module expands capacity for heavier workloads
  • Synology-validated compatibility ensures trouble-free installation

Synology 4 GB DDR4 ECC SODIMM for DS2422+

This is a 4 GB DDR4 ECC unbuffered SODIMM module manufactured by Synology as an accessory for its NAS line. It is validated for the DS2422+ model in the 22 series. The part number is D4ES02-4G and it was first listed by the manufacturer on 31 October 2024.

Suitable for DS2422+ owners adding ECC memory

This module suits administrators who want to increase the memory of a Synology DS2422+ with error-correcting code RAM that matches the vendor qualification list. Builders who need a different capacity, a different form factor, or memory for a non-Synology platform should look elsewhere.

4 GB DDR4 ECC unbuffered SODIMM specification

The decisive specification is the 4 GB DDR4 ECC unbuffered SODIMM configuration. Only systems that accept this exact module type and capacity will recognise and use the memory correctly.

Highlights

  • ECC protection guards data integrity on your NAS
  • DDR4 SODIMM fits DS2422+ memory slot directly
  • Unbuffered design keeps latency low for responsive operation
  • Four-gigabyte module expands capacity for heavier workloads
  • Synology-validated compatibility ensures trouble-free installation

Specifications

BrandSynology
ModelD4ES02-4G
TypeAccessory
FeaturesRAM DDR4 ECC Unbuffered SODIMM 4GB
Applied Models:
22 series: DS2422+
Shipping weight0.02 kg
Package size130 × 89 × 10 mm

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Questions about this item

Will this 4GB DDR4 ECC SODIMM fit the DS2422+?

The module is listed as compatible with the 22 series DS2422+, so it fits that model.

How do I install the D4ES02-4G in my DS2422+, and what step is often missed?

Power off the NAS, open the chassis, insert the SODIMM at an angle until it clicks, then secure the retention clips; the step often missed is fully seating both clips.

When will the DDR4 ECC SODIMM need replacement in a DS2422+?

ECC memory rarely fails; replace only if the NAS reports memory errors or fails POST during boot.

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