---
product_id: 536627319
title: "A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers"
brand: "a-tech"
price: "HK$10230"
currency: HKD
in_stock: false
reviews_count: 5
url: https://www.desertcart.hk/products/536627319-a-tech-16gb-ram-replacement-for-synology-d4ecso-2666-16g
store_origin: HK
region: Hong Kong
---

# 2666 MHz blazing speed 16GB high-capacity module ECC unbuffered error correction A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers

**Brand:** a-tech
**Price:** HK$10230
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Upgrade Your NAS, Upgrade Your Workflow!

## Quick Answers

- **What is this?** A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers by a-tech
- **How much does it cost?** HK$10230 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/536627319-a-tech-16gb-ram-replacement-for-synology-d4ecso-2666-16g)

## Best For

- a-tech enthusiasts

## Why This Product

- Trusted a-tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive 16GB Capacity:** Upgrade your Synology system with a single 16GB SO-DIMM module to handle heavier workloads effortlessly.
- • **Plug & Play Compatibility:** Perfectly compatible with a wide range of Synology RackStation, DiskStation, FlashStation, and NVR models—no hassle, just power.
- • **Error-Resistant ECC Memory:** Ensure data integrity and system stability with ECC unbuffered technology designed for critical server environments.
- • **Blazing Fast DDR4 Performance:** Boost your NAS & NVR with 2666 MHz speed for seamless multitasking and rapid data access.
- • **Lifetime Warranty & US Support:** Buy confidently with A-Tech’s limited lifetime warranty and dedicated US-based tech support ready to assist you anytime.

## Overview

The A-Tech 16GB DDR4 2666 MHz SO-DIMM ECC unbuffered memory module is a high-performance RAM replacement designed specifically for Synology NAS and NVR servers. It delivers reliable, error-correcting memory with a low 1.2V power profile, ensuring enhanced multitasking and system responsiveness across a broad range of Synology models. Backed by a limited lifetime warranty and US-based technical support, this upgrade guarantees both performance and peace of mind.

## Description

An A-Tech Memory (RAM) upgrade is an easy, quick way to boost your system's performance by speeding up loading times, improving system responsiveness, and increasing your system's ability to handle higher workloads. Take on more and multitask with ease with a simple and affordable A-Tech Memory upgrade!High Performance Memory RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16GCompatible with Synology RackStation, FlashStation, DiskStation, and Deep Learning Video Analytics NVR NAS Server Models:FS1018, RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, DVA3221, RS820RP+, RS820+, DS2419+II, DS2419+, DS1819+, DVA3219, DS3018xs, DS1618+, DS3617xsII, DS3617xs, DS3622xs+, DS2422+, DS723+, DS923+Memory Specs Memory Size: 16 GB ( 1 x 16 GB Module ) Memory Type: DDR4 Form Factor: SO-DIMM ( 260 Pin ) Speed: 2666 MHz / 2667 MHz ( PC4-21300 / PC4-2666V ) ECC Type: ECC Unbuffered Rank: 2Rx8 - Dual Rank x8 Voltage: 1.2VEnsured ReliabilityAll A-Tech Memory products are rigorously tested to ensure that your memory meets our stringent quality and performance standards.Limited Lifetime WarrantyPurchase with confidence knowing that all A-Tech orders are backed with our Limited Lifetime Warranty.US Based Technical SupportNeed help? Have questions? Our 5 star United States based support team is here to help before, during, and after your purchase to make sure you are completely satisfied with your A-Tech Memory!

Review: Instalación fácil y sin error. Funcionando al 100
Review: Totalmente compatible con el synology DS720+ sin problema, esperemos el rendimiento con el tiempo que pase la prueba de uso

## Features

- Memory RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G
- Compatible for Synology RackStation, FlashStation, DiskStation, and Deep Learning Video Analytics NVR NAS Server Models: FS1018, RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, DVA3221, RS820RP+, RS820+, DS2419+II, DS2419+, DS1819+, DVA3219, DS3018xs, DS1618+, DS3617xsII, DS3617xs, DS3622xs+, DS2422+, DS723+, DS923+
- Backed by A-Tech's Limited Lifetime Warranty + Friendly tech support team available to help before and after your purchase
- Single 16GB RAM Module | DDR4 SO-DIMM 260-Pin | Speeds up to 2666MHz (2667MHz), PC4-21300 / PC4-2666V
- ECC Unbuffered | 2Rx8 - Dual Rank | JEDEC DDR4 standard 1.2V

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | A-Tech |
| Manufacturer | a-tech |
| Product Dimensions | 6.96 x 3 x 0.38 cm; 9 Grams |
| Item part number | F_B08VWY26QG |
| RAM Size | 16 GB |
| Ram Memory Technology | DDR4 |
| Computer Memory Type | DDR4 SDRAM |
| Compatible Devices | FS1018, RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, DVA3221, RS820RP+, RS820+, DS2419+II, DS2419+, DS1819+, DVA3219, DS3018xs, DS1618+, DS3617xsII, DS3617xs, DS3622xs+, DS2422+ |
| Special Features | Ecc, Lightweight |
| Number of items | 1 |
| Voltage | 1.2 Volts |
| Batteries Included | No |
| Batteries Required | No |
| Data Transfer Rate | 21300 Megabytes Per Second |
| Form Factor | SO-DIMM |
| Manufacturer | a-tech |
| Country of Origin | China |
| Item Weight | 9 g |

## Product Details

- **Brand:** A-Tech
- **Computer Memory Size:** 16 GB
- **RAM Memory Technology:** DDR4
- **Memory Speed:** 2666 MHz
- **Compatible Devices:** FS1018, RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, DVA3221, RS820RP+, RS820+, DS2419+II, DS2419+, DS1819+, DVA3219, DS3018xs, DS1618+, DS3617xsII, DS3617xs, DS3622xs+, DS2422+, DS723+, DS923+

## Images

![A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers - Image 1](https://m.media-amazon.com/images/I/41Uohr9J4nL.jpg)
![A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers - Image 2](https://m.media-amazon.com/images/I/41ZuzUWqnpL.jpg)
![A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers - Image 3](https://m.media-amazon.com/images/I/41xW++Iw8uL.jpg)
![A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers - Image 4](https://m.media-amazon.com/images/I/51tTkd4q3oL.jpg)
![A-Tech 16GB RAM Replacement for Synology D4ECSO-2666-16G & D4ES01-16G | DDR4 2666 MHz PC4-21300 SODIMM ECC Unbuffered Memory Compatible for NAS & NVR Servers - Image 5](https://m.media-amazon.com/images/I/81cQYWWQynL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***O on 14 October 2023*

Instalación fácil y sin error. Funcionando al 100

### ⭐⭐⭐⭐⭐ Review
*by G***Z on 30 July 2024*

Totalmente compatible con el synology DS720+ sin problema, esperemos el rendimiento con el tiempo que pase la prueba de uso

### ⭐⭐⭐⭐⭐ Review
*by P***D on 21 February 2025*

Using in my DS923+ with no issues. I recommend this over the pricey Synology memory.

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-26*