Sonnet Echo SE I Thunderbolt 3 Enclosure – Compact 1-Slot for Low-Profile PCIe Cards

The Sonnet Echo Express SE I Thunderbolt 3 Expansion Chassis is a compact desktop 1-slot Thunderbolt expansion system, designed to add professional PCIe connectivity to any Thunderbolt 3 or Thunderbolt 4 equipped Mac, Windows, or Linux computer. This low-profile PCIe card expansion solution enables you to connect high-performance PCIe cards, including media capture, audio DSP, network, and SSD storage cards, with ease.

Compact Thunderbolt 3 enclosure designed for one low-profile PCIe card. Not compatible with full-height or double-width cards or GPUs.

Whether you’re working in video production, audio processing, or need fast networking and storage solutions, the Echo Express SE I offers desktop-class PCIe expandability in an ultra-compact, portable form factor. Made from rugged aluminum, this enclosure provides superior cooling and low noise, making it perfect for both studio and mobile workflows.

Key Features:

• Compact 1-Slot Thunderbolt Expansion System – One x8 PCIe 3.0 slot
  x8 mechanical; x4 electrical (Thunderbolt 3 spec)
  
• High-Speed Thunderbolt 3 Interface – Up to 2750 MB/s data transfer rate.
  
• Low-Profile PCIe Card Expansion – Ideal for video capture, audio DSP, 10GbE networking, and SSD storage cards. (One low-profile PCIe card)
  
• Quiet and Efficient Cooling – Intelligent, temperature-controlled fan for optimized airflow and low noise operation.
  
• Broad Compatibility – Works with macOS, Windows, and Linux systems equipped with Thunderbolt 3 or Thunderbolt 4 ports.
  
• Built for Pro Applications – Supports PCIe 3.0 x8 cards for high-performance workflows.
  
• Compact and Rugged Design – Small enough to fit on a desk; durable aluminum enclosure protects internal components.
• Warranty - 2-Year Manufacturer Warranty – Covers defects in materials and workmanship.

What’s in the Box?

1 × Sonnet Echo Express SE I Thunderbolt 3 Expansion Chassis
1 × 0.7- meter Thunderbolt cable(3)
1 × Region-specific power cable UK or EU
1 × ThunderLok (Thunderbolt connector retainer clip)(4)
1 × Setup Guide

Technical Notes

1. While the Echo Express SEL 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.
   
2. Second Thunderbolt port supports USB 3.2 Gen 1 (5Gb) or Gen 2 (10Gb) devices when connected with proper cable or adapter (sold separately).
   
3. Full performance requires the use of the included Thunderbolt cable or any Thunderbolt 5, 4, or 3 cable; not Thunderbolt 20Gbps cables. Look for the Thunderbolt icon and the number 5, 4, or 3 on the connector housings to identify 40Gbps or better Thunderbolt cables.
   
4. ThunderLok compatible specifically with Sonnet 0.5- and 0.7-meter Thunderbolt cables.