Sonnet Echo Express SEL Thunderbolt 5 One-Slot Low-Profile PCIe Card Expansion System

The Sonnet Echo Express SEL Thunderbolt 5 Expansion Chassis is a compact desktop 1-slot Thunderbolt expansion system, designed to add professional PCIe connectivity to any Thunderbolt 5, Thunderbolt 4, or Thunderbolt 3 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 5 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 SEL brings desktop-class PCIe expandability in an ultra-compact, portable form factor to the latest generation of Thunderbolt 5 computers, while remaining fully backward compatible with Thunderbolt 4 and Thunderbolt 3 hosts.

Key Features:

• Compact 1-Slot Thunderbolt Expansion System – One x8 PCIe slot for a half-length, low-profile, single-width PCIe card.
• Thunderbolt 5 Interface – Built for the latest Thunderbolt 5 host platforms, with up to 80Gbps of Thunderbolt bandwidth.
• Low-Profile PCIe Card Expansion – Ideal for video capture, audio DSP, networking, and SSD storage cards. (One low-profile PCIe card)
• Broad Compatibility – Works with macOS, Windows, and Linux systems equipped with Thunderbolt 5, Thunderbolt 4, or Thunderbolt 3 ports.
• Compact and Rugged Design – Small enough to fit on a desk; durable aluminium enclosure protects internal components.
• Warranty - 2-Year Manufacturer Warranty – Covers defects in materials and workmanship.

What's in the Box?

1 x Sonnet Echo Express SEL Thunderbolt 5 Expansion Chassis
1 x Universal power adapter
1 x Region-specific power cable (UK, EU)
3 x Thunderbolt cable
4 x ThunderLok 3 Thunderbolt connector retainer clip
1 x Documentation

Full specifications are being finalised by Sonnet ahead of official release. This listing will be updated with confirmed performance figures, compatibility notes, and product manuals as soon as they are published.