---
product_id: 159133997
title: "Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis)"
brand: "sonnet"
price: "AR$3428972"
currency: ARS
in_stock: true
category: "Sonnet"
url: https://www.desertcart.com.ar/products/159133997-sonnet-echo-express-seiiie-thunderbolt-3-edition-3-slot-pcie
store_origin: AR
region: Argentina
---

# 40Gbps Thunderbolt 3 speed 2750 MB/s PCIe bandwidth 3 full-height PCIe 3.0 slots Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis)

**Brand:** sonnet
**Price:** AR$3428972
**Availability:** ✅ In Stock

## Summary

> ⚡ Supercharge your Mac’s potential with triple PCIe power!

## Quick Answers

- **What is this?** Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis) by sonnet
- **How much does it cost?** AR$3428972 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/159133997-sonnet-echo-express-seiiie-thunderbolt-3-edition-3-slot-pcie)

## 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

- • **Peace of Mind Warranty:** Backed by a 2-year warranty and free lifetime support from a trusted brand since 1986.
- • **Robust Build & Cooling:** Durable metal chassis with temperature-controlled fan ensures your high-performance cards stay cool under pressure.
- • **Triple PCIe Powerhouse:** Expand your Mac’s capabilities with three full-height, half-length PCIe 3.0 slots for ultimate multi-card performance.
- • **Blazing Thunderbolt 3 Speed:** Experience ultra-fast 40Gbps Thunderbolt 3 connectivity that doubles the bandwidth of previous generations.
- • **Seamless Multi-Device Setup:** Two Thunderbolt 3 ports allow daisy-chaining, keeping your workspace sleek and connected.

## Overview

The Sonnet Echo Express SEIIIe Thunderbolt 3 Edition is a premium 3-slot PCIe expansion chassis designed for Macs with Thunderbolt 3 ports. It supports three full-height, half-length PCIe 3.0 cards simultaneously, delivering up to 2750 MB/s PCIe bandwidth via a 40Gbps Thunderbolt 3 interface. Featuring dual Thunderbolt 3 ports for daisy-chaining, a robust metal enclosure with active cooling, and a 2-year warranty with lifetime support, it’s the ultimate solution for professionals demanding high-performance multi-card setups.

## Description

Buy Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis): Graphics Cards - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Connects three pcie cards to any mac with thunderbolt 3 ports-use multiple high-performance pcie cards at the same time
- Three pcie 3.0 slots-supports three full-height, half-length+ (up to 7.75 inches long)
- 40gbps thunderbolt 3 interface-offers 2750 mb/s of pcie bandwidth, doubling the performance of thunderbolt 2
- Two thunderbolt 3 (usb-c) ports-one port reserved for connection to the computer
- See Computer Compatibility at Bottom of Page, Includes 2-year warranty and free lifetime customer support since 1986

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XHP2D12 |
| Antenna Location | Gaming |
| Best Sellers Rank | #673 in Computer Graphics Cards |
| Brand | Sonnet |
| Case Type | Desktop |
| Color | Black |
| Compatible Devices | Personal Computer, Mackbook Pro, |
| Cooling Method | Air |
| Customer Reviews | 4.2 4.2 out of 5 stars (47) |
| Enclosure Material | Metal |
| Global Trade Identification Number | 00732311012938 |
| Hard Disk Form Factor | 3.5 inches |
| Internal Bays Quantity | 3 |
| Item Dimensions D x W x H | 8.11"D x 9.06"W x 16.38"H |
| Item Weight | 3 kg |
| Manufacturer | Sonnet Technologies |
| Mfr Part Number | ECHO-EX-SE3E-T3 |
| Model Name | SEIIIe |
| Model Number | ECHO-EX-SE3E-T3 |
| Other Special Features of the Product | Temperature-Controlled Fan and Auxiliary Power Connector |
| Power Supply Mounting Type | External |
| Supported Motherboard | Extended ATX |
| UPC | 732311012938 |

## Product Details

- **Brand:** Sonnet
- **Case Type:** Desktop
- **Color:** Black
- **Cooling Method:** Air
- **Item Weight:** 3 kg
- **Material:** Metal
- **Model Name:** SEIIIe
- **Motherboard Compatability:** Extended ATX
- **Power Supply Mounting Type:** External
- **Recommended Uses For Product:** Gaming

## Images

![Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis) - Image 1](https://m.media-amazon.com/images/I/51SSDOrqg4L.jpg)

## Questions & Answers

**Q: If i used this for adaptec raid controller, will performance be the same as if installed on the server motherboard?**
A: We expect the Adaptec RAID controllers to have an adequate cache to support Thunderbolt performance that is similar to motherboard performance.

**Q: Is it possible to use it with pro tools hdn card and aja lhi,  with a new macstudio?**
A: Hello Michael, The ProTools HDX card does not fit in the Echo Express SEIIIe. You would need an Echo III, which supports the full-length HDX card and works with the M1 Macs.

**Q: Will this work with older server class sas/sata raid cards - specifically lsilogic sas9260 or other cards from that generation?**
A: You would have to ask the card maker whether their driver is Thunderbolt compatible, which usually means that the driver needs to gracefully handle hot plug/unplug. Drivers that cannot handle hot plug/unplug may still work if you plug/unplug the Thunderbolt chassis from the computer only when the computer is shut down.

**Q: Will this work on a Dell PC?**
A: Thunderbolt drivers are provided by Intel, so yes, it should work

## Frequently Bought Together

- Sonnet Echo Express SEIIIe Thunderbolt 3 Edition (3-Slot PCIe Card Expansion Chassis)
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**Shop now:** [https://www.desertcart.com.ar/products/159133997-sonnet-echo-express-seiiie-thunderbolt-3-edition-3-slot-pcie](https://www.desertcart.com.ar/products/159133997-sonnet-echo-express-seiiie-thunderbolt-3-edition-3-slot-pcie)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-08-31*