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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

  • Product typeAccessory
  • Key featuresRAM DDR4 ECC Unbuffered SODIMM 4 GB Applied Models: 22 serie

Model 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.

How it compares

Measured against everything we stock in Multi-Bay Desktop NAS, at today’s prices. Recalculated every night.

Price $195.99
Cheaper than about 83% of the 230 comparable items (median $562.49).

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Specifications

Product
Brand nameSynology
Model nameD4ES02-4G
Product typeAccessory
Size & build
Shipping weight0.02 kg
Package size130 × 89 × 10 mm

Other versions of this model

5 more in the same range

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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