---
product_id: 44351724
title: "Thunderbolt 3 Upgrade Card for Echo Express III-D & III-R Expansion System"
brand: "sonnet"
price: "R6827"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/44351724-thunderbolt-3-upgrade-card-for-echo-express-iii-d-iii
store_origin: ZA
region: South Africa
---

# Thunderbolt 3 ports Mac & PC compatible 4K max resolution Thunderbolt 3 Upgrade Card for Echo Express III-D & III-R Expansion System

**Brand:** sonnet
**Price:** R6827
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate Your Setup with Thunderbolt 3 Power!

## Quick Answers

- **What is this?** Thunderbolt 3 Upgrade Card for Echo Express III-D & III-R Expansion System by sonnet
- **How much does it cost?** R6827 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/44351724-thunderbolt-3-upgrade-card-for-echo-express-iii-d-iii)

## Best For

- sonnet enthusiasts

## Why This Product

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

## Key Features

- • **Compact Design:** Lightweight and sleek, perfect for any workspace.
- • **Stunning Visuals:** Experience breathtaking 4K resolution for your projects.
- • **Powerful Performance:** 16 GB RAM ensures smooth multitasking and graphics handling.
- • **Seamless Compatibility:** Works flawlessly with both Mac and PC systems.
- • **Unleash Your Potential:** Upgrade your Echo Express with Thunderbolt 3 speed!

## Overview

The Sonnet Thunderbolt 3 Upgrade Card transforms your Echo Express III-D & III-R Expansion System, providing two Thunderbolt 3 (USB-C) ports for enhanced connectivity. Compatible with both Mac and PC, it supports a maximum screen resolution of 4K and features 16 GB of RAM for optimal performance. Weighing just 3.53 ounces, this upgrade card is designed for professionals seeking to boost their productivity and visual experience.

## Description

Sonnet Thunderbolt 3 Upgrade Card for Echo Express III-D & III-R Expansion System

## Features

- Sonnet Thunderbolt 3 Upgrade Card - Documentation - Sonnet 1 Year Limited Warranty
- Hardware Compatibility: Echo Express III-D (Thunderbolt 2 Edition)Echo Express III-R (Thunderbolt 2 Edition)
- External Connectors: Two Thunderbolt 3 (USB-C) ports
- Mac Compatibility: All Upgrade Card ModelsMac with Thunderbolt 3 ports Macs with Thunderbolt 2 or Thunderbolt ports with the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 AdaptermacOS 10.12.1+
- PC Compatibility: BRD-UGRTB3-SEL, BRD-UPGTB3-SE1PC with a Thunderbolt 3Windows 10, 8, 7

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Max Screen Resolution | 4k |
| RAM | 16 GB |
| Graphics Card Ram Size | 16 GB |
| Brand | Sonnet |
| Item model number | BRD-UPGRTB3-E3 |
| Operating System | Mac OS, Windows 10 |
| Item Weight | 3.53 ounces |
| Product Dimensions | 8.66 x 5.39 x 1.34 inches |
| Item Dimensions  LxWxH | 8.66 x 5.39 x 1.34 inches |
| Manufacturer | Sonnet |
| ASIN | B071H9VCGW |
| Is Discontinued By Manufacturer | No |
| Date First Available | April 27, 2017 |

## Product Details

- **Brand:** Sonnet
- **Hardware Interface:** Thunderbolt 3, Fibre Channel
- **Style:** Classic
- **Item Weight:** 100 Grams
- **Compatible Devices:** Desktop

## Images

![Thunderbolt 3 Upgrade Card for Echo Express III-D & III-R Expansion System - Image 1](https://m.media-amazon.com/images/I/71fWWZPeA4L.jpg)

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**Shop now:** [https://www.desertcart.co.za/products/44351724-thunderbolt-3-upgrade-card-for-echo-express-iii-d-iii](https://www.desertcart.co.za/products/44351724-thunderbolt-3-upgrade-card-for-echo-express-iii-d-iii)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-20*