Key Features
Compatibility
Product Description
Space for Daughter Card. Connect One Full-height, Half-length+ PCIe Card (Plus Daughter Card) to Computers with Thunderbolt 3 or Thunderbolt 4 Ports
Connect One Full-height, Half-length+ PCIe Card (Plus Daughter Card) to Computers with Thunderbolt 3 or Thunderbolt 4 Ports
Are you in the market for a new computer? It’s amazing how much processing power the latest Mac® and Windows®, and Linux® computers with Thunderbolt™ ports offer, but thinness comes with a cost—there’s nowhere for you to install PCIe cards for the additional connectivity and processing capabilities beyond what’s offered by a computer’s standard ports. Sonnet’s Echo™ Express SE I (Thunderbolt 3 Edition) is a compact, desktop Thunderbolt™ to PCIe card expansion system that enables you to connect a single PCIe card to any computer with Thunderbolt 3 or Thunderbolt 4 ports.
Echo Express SE I: Compact Desktop Expansion
Echo Express SE I provides a single PCIe card expansion slot in a compact and light enclosure. Designed to accommodate cards up to 7.75 inches long and measuring a compact 5.6 inches wide by 8.6 inches long by 3.5 inches tall, the Echo Express SE I has a small footprint, yet it is large enough to support nearly every Thunderbolt 3-compatible PCIe 3.0, PCIe 2.0, and PCIe 1.1 card available.
Key Features:
- For Computers with Thunderbolt 3 or Thunderbolt 4 Ports
- 40Gbps Thunderbolt Interface
- One PCIe 3.0 x8 Slot + Space for Daughter Card
- Two Thunderbolt 3 Ports
- Remarkably Quiet
- Energy Savery Mode
- Rugged Aluminum Housing
- Power for Peripherals – 15W of Power to Connected Peripherals
- Includes 0.7-meter Thunderbolt 3 Cable (unlike other brand of cables, Sonnet's cable provides Thunderbolt 3's full 2750 MB/s bandwidth and supports up to 100W of power delivery)
- Includes Sonnet Designed ThunderLok 3 Connector Retainer Clip (prevents accidental cable disconnections)
- Mac, Windows, and Linux Compatible
- 2-year Product Warranty
- Free Lifetime Customer Technical Support
- Designed and Made in the USA
Package Contents
Echo Express SE I Desktop System
Universal power adapter
Region-specific power cable for UK or EU
Thunderbolt 3 cable(3)
ThunderLok 3 Thunderbolt connector retainer clip(4)
Documentation
Specifications
- Part Number: ECHO-EXP-SE1-T3
- Warranty: 2-year
- Form Factor: Thunderbolt desktop enclosure
- External Connectors: Two Thunderbolt ports(2), 12V power port
- Expansion Slot: One PCIe 3.0 slot, x8 mechanical; x4 electrical (Thunderbolt 3 spec)
- PCIe Cards Supported: One half-length (up to 7.75 inches long), single-width, full-height x8 PCIe card, One daughter card
- Power Adapter: Universal 60W, 100-240V, 50-60 Hz, NRTL Certified - check PDF here
- Operating Temperature: 0ºC to 35ºC (32ºF to 95ºF)
- Dimensions (WxDxH): 5.63 x 8.63 x 3.5 in. (14.29 x 22.01 x 8.85 cm)
- Weight: 2.6 lbs. (1.18 kg)
- Compliance: RoHS 3 (Directive 2015/863), IEC62368-1 and IEC62368-2 Safety
- Support Links: Product Manual PDF
- Technical Notes:
- While the Echo Express SE I features a 40Gbps Thunderbolt interface, some Windows computers equipped with Thunderbolt 3 use an x2 PCIe lane implementation of Thunderbolt 3 technology that limits PCIe performance to 20Gbps.
- Second Thunderbolt port supports USB 3.2 Gen 1 (5Gb) or Gen 2 (10Gb) devices when connected with proper cable or adapter (sold separately).
- Full performance requires the use of the included or comparable 40Gbps Thunderbolt cables; look for the Thunderbolt icon AND the number 3 on the connector housings to identify these cables. Full performance supported by any Thunderbolt 4 cable.
- ThunderLok 3 compatible specifically with Sonnet 0.5- and 0.7-meter Thunderbolt 3 cables.
Compatibility
- Mac Compatibility
- Mac (M series) with PCIe cards that have compatible drivers
- Mac (Intel®) with Thunderbolt 3 ports
- Mac (Intel) with a Thunderbolt 2 or Thunderbolt 1 port with an Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter plus a Thunderbolt 2 cable (both sold separately)
- macOS® 10.12.6+
- macOS Sonoma compatible
- Windows Compatibility
- Windows computer with Thunderbolt 4 or Thunderbolt 3(1) ports
- Windows 11 and 10
- Linux Compatibility
- Linux computer with Thunderbolt 4 or Thunderbolt 3 ports
- Linux Kernel 5.4+
- PCIe Card Compatibility
- For a list of compatible PCIe cards, see the following PDF
Product videos
Shipping, Returns & VAT
- Free UK Shipping: Delivered in approx. 2 working days
- Express Options: Faster methods available at checkout
- Free Shipping to Ireland: For orders over £100.00
- International Delivery: Times vary by destination; shipped via FedEx or DHL
- 30-Day Returns: Return within 30 days from order date
- UK, Ireland and EU Customers: Free return label provided
- Full Return Policy: Read Here
- Full Shipping Details: Read Here
VAT & Duties Information
UK & EU Customers: The price shown on our website is the final price you pay. No additional VAT, customs duties, or import fees will be charged upon delivery.
Orders are dispatched from Northern Ireland, allowing us to serve customers across the United Kingdom and the European Union without unexpected import charges.
Non-UK and non-EU destinations: Local taxes, customs duties, and import fees may apply and are the responsibility of the recipient.
Payment
Safe payment on our website.
Pay by card, Klarna, PayPal, Apple Pay, G-Pay, Shop Pay, Revolut, Bancontact, iDeal, or even bank transfer.
Customer Service
Email and chat available 24/7
Free number UK: 08001954072
International: +442838341148
Phone Line Opening Hours
- Monday - Friday: 09:00-17:00

