Echo Express SE I - Compact Desktop Thunderbolt Expansion System for One PCIe Card (Plus a Daughter Card)
Compact.
Full Performance.
Compact. Full Performance.

Echo Express SE I

1-slot Desktop Thunderbolt to PCIe Card Expansion System for Computers with Thunderbolt 4 or Thunderbolt 3 Ports

Connect One Full-height, Half-length+ PCIe Card (Plus Daughter Card)

It’s amazing how much processing power Mac®, Windows®, and Linux® computers with Thunderbolt™ 4 or Thunderbolt 3 ports offer today's creative professionals. However, these sleek marvels of engineering thinness come at a cost — they lack PCIe expansion slots for adding PCIe cards for connectivity and processing capabilities. Sonnet has a solution – the Echo™ Express SE I Thunderbolt to PCIe card expansion system provides a compact, one-slot Thunderbolt expansion system that enables you to connect a single PCIe card to your computer via a single cable.

Echo Express SE I with MacBook Pro

The Thunderbolt Connection

Plugged into one of your computer’s Thunderbolt 4 or Thunderbolt 3 ports, this compact desktop expansion system supports one professional PCIe card (video capture, audio interface, 6Gb or 12Gb SAS or SATA host bus adapter, 8Gb or 16Gb Fibre Channel, 10Gb or 25Gb Ethernet, or RAID controller) plus a daughter card.

Why Thunderbolt 3 Instead of Thunderbolt 4?
Sonnet’s Thunderbolt to PCIe card expansion systems rely on Thunderbolt 3 technology for maximum performance. Learn Why ›

Key Features

Connect a PCIe Card Icon

Connect a PCIe Card

Use high-performance PCIe cards with any computer with Thunderbolt 4 or Thunderbolt 3 ports.

One PCIe 3.0 x8 Slot Icon

One PCIe 3.0 x8 Slot

Supports one half-length+ (up to 7.75 inches long), full-height, single-width PCIe card (plus one daughter card).

40Gbps Thunderbolt System Icon

40Gbps Thunderbolt System

Offers full PCIe bandwidth to the installed card. Learn more about Thunderbolt 3 performance benefits over Thunderbolt 4.

Small, Light, Full Performance Icon

Small. Light. Full Performance.

Takes up little space on the desktop, but large enough to support nearly every Thunderbolt-compatible PCIe card, at full performance.

Two Thunderbolt Ports Icon

Two Thunderbolt Ports

One port connects to computer; second port supports daisy-chaining of up to five additional Thunderbolt peripheral devices.

Remarkably Quiet Icon

Remarkably Quiet

Temperature-controlled, variable-speed fan automatically and quietly cools the card.

Energy Saver Mode Icon

Energy Saver Mode

Powers on/off automatically with the computer.

Rugged Aluminum Housing Icon

Rugged Aluminum Housing

Provides robust and secure protection.

Power for Peripherals Icon

Power for Peripherals

Daisy chain port provides up to 15W of power to connected peripherals.

Apple M Series Compatible Icon

Apple® M series Compatible

Supports M series Macs (with PCIe cards that have compatible drivers).

Intel Mac and Windows Compatible Icon

Intel® Mac & Windows Compatible

Supports Intel Macs with Thunderbolt 3 ports and Thunderbolt 2 ports (with adapter and Thunderbolt 2 cable, both sold separately); and Windows computers with Thunderbolt 4 and Thunderbolt 3 ports.

Linux Compatible Icon

Linux Compatible

Supports Linux computers with Thunderbolt 4 and Thunderbolt 3 ports.

Free Lifetime Tech Support
PCIe Cards

Nearly Every Thunderbolt-Compatible, Non-GPU PCIe Card Supported

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 compatible PCIe 4.0, 3.0, PCIe 2.0, and PCIe 1.1 card available. Do you have a card in mind but aren’t sure it’s compatible? We’ve put together a compatibility list that identifies cards conforming to Thunderbolt technology requirements, and organized by fit and power compatibility with specific expansion systems. 

Echo Express SE I Icon

All Around Smart Design

Aluminum Enclosure. Auto Power On/Off.

Echo Express SE I’s lightweight, yet rugged aluminum outer shell securely houses the installed PCIe card. Since Echo Express products automatically power on and off with your computer, there is no power switch on the chassis, ensuring you don’t waste energy by forgetting to turn it off.

One PCIe 3.0 Slot and Space for a Daughter Card

Echo Express SE I features an x8 PCIe slot, and supports one half-length+, full-height, single- or double-width PCIe card. Double-width? Some pro video and audio interface cards, such as Blackmagic Design’s DeckLink 4K Extreme, and RME’s HDSPe MADI FX card, include a daughter card that mates with and provides additional external connections to the main card. The daughter card occupies the adjacent space without filling a PCIe slot.

Echo Express SE I PCIe Card Size Support
Echo Express SE I Interior View

1. Space for a daughter card
2. PCIe 3.0 x8 slot

Fan Icon

Quiet Please

Echo Express SE I is designed to be ultra-quiet so that it can be comfortably used in noise-sensitive environments. The airflow path within the chassis has been specially designed to enable the temperature-controlled, variable speed fan to quietly and efficiently cool the installed card at all times, even during peak operation.
The Secure Connection for High Performance

40Gbps Thunderbolt Cable and ThunderLok 3 Included

Sonnet includes a Thunderbolt cable that supports Thunderbolt’s full 40Gbps bandwidth, and is fully compatible with Thunderbolt 4 and Thunderbolt 3 computers. Sonnet also provides a ThunderLok™ 3 Thunderbolt connector retainer clip that prevents accidental cable disconnections — just slide it over one end of the cable, and then plug in the connector and secure it to the chassis by turning a thumbscrew. Because of its unique design, ThunderLok remains on the cable so it won’t get lost when not in use.
40Gbps Thunderbolt Cable with ThunderLok 3Supports Ful l40Gbps Thunderbolt Bandwidth

40Gbps Thunderbolt

Fastest External Interface Available

The Echo I Desktop features a 40Gbps Thunderbolt interface that delivers up to 2800 MB/s of PCIe bandwidth, enabling it to support 4K video capture and processing cards at high frame rates, and 16Gb FC cards and dual-port 10GbE cards at full performance.

Thunderbolt 40Gbps Ports Icons
Dual 40Gbps Thunderbolt Ports
One port is reserved for the connection to your Thunderbolt 4 or Thunderbolt 3 computer; the second port enables expansion of up to five additional Thunderbolt peripheral devices in a daisy chain.
10Gbps USB 3.1 Gen 2 Icon
10Gbps USB 3.2 Gen 2 Support
10Gbps USB 3.2 Gen 2 support allows you to connect a USB device to the second Thunderbolt port using the proper cable or adapter.
15W Power Icon
Provides 15W of Power
For peripherals requiring the need for extra power, 15 watts is provided to bus-powered devices.
4K & 5K Display Icon
Supports Connecting One 5K 60Hz Display
Maximize the utilization of one computer Thunderbolt port.
Thunderbolt 4 Computers

Compatible with Thunderbolt 4 Computers and Apple M series Macs

Echo Express SE I is fully compatible with Thunderbolt 4 computers, including Apple M series Macs. Sonnet Thunderbolt expansion systems are purposely designed with a Thunderbolt 3 controller and its four lanes of PCIe (not available in a Thunderbolt 4 peripheral) to achieve maximum simultaneous ingest speeds. Learn more about the performance benefits of Thunderbolt 3 over Thunderbolt 4.
Apple M Series CPU

Compatible with Apple M series Macs

see Tech Specs for details

Older Macs with Thunderbolt 2 Ports

Backward Compatible with Older Macs

No Thunderbolt 4 or Thunderbolt 3? No problem — the Echo Express SE I is also compatible with Macs with Thunderbolt 2 or Thunderbolt ports when used with the bi-directional Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter and a Thunderbolt cable (both sold separately).
Learn why Sonnet’s Pro Products Rely on Thunderbolt 3 Technology for Maximum Performance
See Tech Specs for footnotes.
Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.

Echo Express SE I