Synology D4ES02-4G 4GB DDR4 SO-DIMM ECC Memory Module
Enhance your Synology NAS with D4ES02‑4G 4 GB ECC DDR4‑2666 SO‑DIMM. Certified for DS923+, DS723+, RS822+/RP+, RS2422+ and DS2422+, delivering reliable performance, DSM compatibility, and extended 5‑year warranty.
Product Overview
The Synology D4ES02‑4G is a 4 GB DDR4‑2666 MHz ECC unbuffered SO‑DIMM memory module specifically engineered for Synology’s 22 and 23‑Series NAS units. Officially validated and backed by Synology’s 5‑year warranty, it offers seamless expansion and improved reliability for models like DS923+, DS723+, RS822+/RP+, RS2422+, and DS2422+ .
Key Features
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4 GB DDR4‑2666 (PC4‑21300) ECC memory – ensures real‑time error detection and correction
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260‑pin unbuffered SO‑DIMM, 1.2 V design for compact NAS systems
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Synology‑certified compatibility with DS923+, DS723+, RS822+/RP+, RS2422+, DS2422+
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5‑year manufacturer warranty from Synology for long‑term support
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Synology-authorized – avoids boot issues and warranty limitations that occur with third‑party RAM
Technical Specifications
| Specification | Details |
|---|---|
| Capacity | 4 GB |
| Speed | DDR4‑2666 MHz (PC4‑21300) |
| ECC | Yes |
| Form Factor | 260‑pin SO‑DIMM (unbuffered) |
| Voltage | 1.2 V |
| Compatible Models | DS923+, DS723+, RS822+/RP+, RS2422+, DS2422+ |
| Warranty | 5 years |
Why Choose D4ES02‑4G?
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Guaranteed compatibility: vetted by Synology to work flawlessly with supported NAS models.
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Enhances system stability: ECC prevents silent data errors, offering robust data integrity.
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Boosts performance: adding memory improves responsiveness for DSM applications, file indexing, and multi-user environments.
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Investment protected: Synology’s 5‑year warranty ensures reliability and support.
FAQs
Q1: Which NAS models support this RAM?
Compatible with Synology’s 22/23‑Series NAS: DS923+, DS723+, RS822+/RP+, RS2422+, DS2422+.
Q2: Can I use third‑party RAM instead?
It may work, but Synology warns unsupported modules can cause instability or void warranty. Official modules ensure full compatibility and support.
Q3: Does ECC really matter?
Yes—ECC detects and corrects single‑bit errors, reducing data corruption risk in NAS environments.
Q4: Will this improve NAS performance?
Yes—additional RAM allows better caching, smoother multitasking, and more efficient DSM app performance.
Q5: Can it be mixed with other RAM?
For best results, combine only with identical models; mixed modules may disable ECC or cause issues.
Q6: How is it installed?
Power off, slot the module into the SO‑DIMM socket, then reboot. DSM auto-detects the upgrade.
