---
product_id: 178310998
title: "4GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 1.2V 260-Pin Non-ECC SO-DIMM Laptop Notebook RAM Memory Module"
brand: "a-tech"
price: "€ 65.94"
currency: EUR
in_stock: true
reviews_count: 10
category: "A Tech"
url: https://www.desertcart.pt/products/178310998-4gb-ddr4-2666mhz-pc4-21300-pc4-2666v-cl19-sodimm-1
store_origin: PT
region: Portugal
---

# 2666 MHz DDR4 speed 4GB capacity 1.2V low power 4GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 1.2V 260-Pin Non-ECC SO-DIMM Laptop Notebook RAM Memory Module

**Brand:** a-tech
**Price:** € 65.94
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your productivity with A-Tech RAM — because every millisecond counts!

## Quick Answers

- **What is this?** 4GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 1.2V 260-Pin Non-ECC SO-DIMM Laptop Notebook RAM Memory Module by a-tech
- **How much does it cost?** € 65.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/178310998-4gb-ddr4-2666mhz-pc4-21300-pc4-2666v-cl19-sodimm-1)

## 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

- • **Plug & Play Simplicity:** No tech expertise needed—easy installation gets you back to work in minutes.
- • **Lightning-Fast 2666 MHz Speed:** Experience smooth performance with high-frequency memory that keeps up with your workflow.
- • **Trusted Reliability & Support:** Backed by A-Tech’s lifetime warranty and expert tech team for peace of mind.
- • **Boost Your Laptop's Brainpower:** Upgrade to 4GB DDR4 for seamless multitasking and faster app launches.
- • **Energy-Efficient 1.2V Operation:** Save battery life without sacrificing power—perfect for on-the-go professionals.

## Overview

The A-Tech 4GB DDR4 2666MHz SO-DIMM is a compact, energy-efficient laptop memory module designed to boost system speed and multitasking capabilities. With a standard 260-pin form factor and low 1.2V power consumption, it offers reliable, plug-and-play performance backed by a limited lifetime warranty and expert support.

## Description

Buy A-Tech 4GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 1.2V 260-Pin Non-ECC SO-DIMM Laptop Notebook RAM Memory Module: Memory - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Good Upgrade or Replacement - Great replacement for a bad SODIMM or a memory upgrade for your laptop. These installed easily and memory tests proved they were reliable. These were used in an HP 15dw laptop and hav proven to work well. A great buy.
Review: Plug and play - Plug n play. No issues at all. Helped my laptop.

## Features

- A-Tech Memory (RAM) upgrade compatible for select Laptop, Notebook, and All-in-One (AIO) computers
- Single 4 GB Module; DDR4 SO-DIMM 260-Pin; Speeds up to 2666/2667-MHz, PC4-21300 (PC4-2666V)
- NON-ECC Unbuffered; 1Rx8 or 1Rx16 (Single Rank); JEDEC DDR4 standard 1.2V
- Expands your system's available Memory RAM resource, improving performance, speed and allowing you to take on more while maintaining a smooth experience
- Quick and easy to install, no expertise required (Please refer to your system's manual for seating and channel guidelines)
- All A-Tech memory modules undergo stringent quality control testing to ensure dependable and reliable performance
- Backed by A-Tech's Limited Lifetime Warranty and supported by our knowledgeable Tech Team available to help before and after your purchase

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07KGN62T1 |
| Best Sellers Rank | #13 in Computer Memory |
| Brand | A-Tech |
| Computer Memory Type | DDR4 SDRAM |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,894) |
| Date First Available | November 13, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 2.74 x 1.18 x 0.15 inches |
| Item Weight | 0.317 ounces |
| Item model number | AT4G1D4S2666NA0N12V |
| Manufacturer | A-Tech Components |
| Memory Speed | 2666 MHz |
| Product Dimensions | 2.74 x 1.18 x 0.15 inches |
| RAM | 4 GB DDR4 |
| Voltage | 1.2 Volts |

## Product Details

- **Brand:** A-Tech
- **Compatible Devices:** Desktop, Laptop
- **Computer Memory Size:** 4 GB
- **Memory Speed:** 2666 MHz
- **RAM Memory Technology:** DDR4

## Images

![4GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 1.2V 260-Pin Non-ECC SO-DIMM Laptop Notebook RAM Memory Module - Image 1](https://m.media-amazon.com/images/I/81S+SqMCjdL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: What’s the difference between DDR4 and other types of memory and can I use them interchangeably?**
A: No, DDR4 memory is not compatible or interchangeable with other types such as DDR5, DDR3, and so on. Each memory type uses different slot designs, voltages, and architectures, so your system must support the memory type specifically.

**Q: What’s the difference between DIMM and SO-DIMM memory?**
A: DIMM and SO-DIMM represent two different physical sizes of memory. DIMM is the larger type used in standard desktop computers. SO-DIMM is the smaller type used in laptops, mini PCs, and compact systems. They are not interchangeable.

**Q: What does "Non-ECC" mean and do I need "ECC" memory instead?**
A: Non-ECC (non-error correcting) memory is required for most laptops and desktops. ECC is typically only used in servers or workstations and is not interchangeable with Non-ECC memory. If your system doesn’t mention ECC support, you need Non-ECC.

**Q: How do I know which speed to choose?**
A: Each system has its own max supported speed. If the memory is faster than your system allows, it will automatically downclock to that max speed, meaning it's safe to buy faster memory. To confirm the max supported speed, refer to your system's manual

**Q: Is this compatible with my system or computer?**
A: Refer to your system's manual to confirm the supported memory type, capacity, form factor, and ECC support. If you're unsure, contact our support team, we're happy to help you find the exact memory your system needs!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Upgrade or Replacement
*by C***T on November 8, 2025*

Great replacement for a bad SODIMM or a memory upgrade for your laptop. These installed easily and memory tests proved they were reliable. These were used in an HP 15dw laptop and hav proven to work well. A great buy.

### ⭐⭐⭐⭐⭐ Plug and play
*by A***W on February 8, 2026*

Plug n play. No issues at all. Helped my laptop.

### ⭐⭐⭐⭐⭐ Fit my Dell Desktop micro tower
*by R***E on February 14, 2026*

Fit my Dell desktop micro tower, the dram installed easily. Great product and the maximum capacity that the computer will handle. the company offers great Tech support. Great price at the time.

## Frequently Bought Together

- A-Tech 4GB DDR4 2666MHz PC4-21300 (PC4-2666V) CL19 SODIMM 1.2V 260-Pin Non-ECC SO-DIMM Laptop Notebook RAM Memory Module
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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-20*