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MAX DV Performance
Echo II DV Desktop
Desktop 2-slot, Dual Thunderbolt Interface to PCIe Card Expansion System for Computers with Thunderbolt Ports
USB-C to Dual 4K 60Hz HDMI Adapter Connected to MacBook Air and Two 4K Displays
Echo II DV Desktop
Desktop 2-slot, Dual Thunderbolt Interface to PCIe Card Expansion System for Computers with Thunderbolt 4 or Thunderbolt 3 Ports
Two High-bandwidth PCIe Cards with Broadcast Studio In Background

Create a Desktop Broadcast Studio

Connect Two Bandwidth-hungry Pro PCIe Cards to Computers with Thunderbolt Ports

Are you a creative pro using one of the latest portable, mini desktop or all-in-one computers in your workflow? By now, you’ve discovered onboard processing power alone is not enough to get the job done. While these Mac®, Windows®, and Linux® computers include high-performance Thunderbolt™ ports to support peripherals, they lack PCIe® expansion slots necessary to install specialty cards that add needed video and audio inputs, transcode data, and connect to high-speed shared storage and networks.

Sonnet has the ultimate solution for cards with high bandwidth requirements — Echo™ II DV Desktop — a professional Thunderbolt to PCIe card expansion system that enables you to connect two up to full-length (12.28 inches long), single-width PCIe cards to your computer, each to a separate Thunderbolt port (if needed) for maximum bandwidth to each card.

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Dual Thunderbolt Interfaces - Double the Dedicated BandwidthDual Thunderbolt Interfaces - Double the Dedicated Bandwidth
Dual Thunderbolt Interfaces
Double the Dedicated Bandwidth
PCIe Card Icon
Connect DV I/O or Other Bandwidth-hungry PCIe Cards
Dual Thunderbolt Interface Icons
Dual Thunderbolt Interfaces for Maximum Bandwidth
2x 2800 MB/s Icon
Full 2880 MB/s PCIe Bandwidth to Each Slot
Thunderbolt Ports On Back of Mac Studio
Connect Echo II DV to Two Thunderbolt Ports on Your Computer for Maximum DV Performance
Mac Studio Connected to Apple Pro Display XDR and Echo II DV Desktop
2x 2880 MB/s

Specially Designed to Support Maximum Performance from Two Cards

Two PCIe Card Slots. Dual Thunderbolt Interfaces for Double the Bandwidth.

Some computers — such as the latest MacBook Pro®, Mac Studio®, Mac mini® and iMac® — have multiple Thunderbolt ports that are supported by separate 40Gbps Thunderbolt buses and provide up to 2880 MB/s of PCIe bandwidth to each port. Among multi-slot Thunderbolt to PCIe card expansion systems, the Sonnet Echo II DV Desktop is unique. Instead of using one Thunderbolt interface for two or three slots — which dynamically allocates the PCIe bandwidth between them — Echo II DV employs one interface per slot. With each slot getting Thunderbolt’s full PCIe bandwidth, you can exploit two cards’ full potential when connected at the same time to separate Thunderbolt buses on the computer, ideal for cards with high bandwidth requirement such as DV I/O, NVMe SSD storage, and 10 and 25Gb Ethernet adapters.

Dual Thunderbolt Interface Cards Inside Echo II DV Desktop

It’s All About That Bandwidth!

Separate Thunderbolt Interface for Each Card Slot

By employing a separate Thunderbolt interface for each card slot, Echo II DV is designed to provide full PCIe bandwidth to each slot when connected to two computer Thunderbolt ports that also have independent PCIe bandwidth. Computers with independent PCIe bandwidth to two or more Thunderbolt ports include all Apple silicon (M series) Macs, and Intel Macs or PCs with three or four Thunderbolt ports. (A few Pro PC laptops with only two Thunderbolt ports support independent PCIe Bandwidth. Check your computer’s specifications.) Computers that share PCIe bandwidth between their Thunderbolt ports, that would provide only shared bandwidth to the two slots, include Intel Macs or PCs with only two Thunderbolt ports.

Dual Thunderbolt Ports Icon

Dual Thunderbolt Ports Connection Option for Maximum Performance

Connect Two DV I/O or Other High-bandwidth Cards Directly to Two Thunderbolt Ports On Your Computer for Full PCIe Bandwidth to Each Card

Dual Thunderbolt Ports Connection Diagram
Single Thunderbolt Port Icon

Single Thunderbolt Port Connection Option

Also Works with Computers with Only One Available Thunderbolt Port to Support Two Cards

Single Thunderbolt Port Connection Diagram

Got Only One Thunderbolt Port On Your Computer?

Daisy Chain the Two Thunderbolt Interfaces to Connect Two PCIe Cards Through a Single Thunderbolt Cable

Does your computer have only one available Thunderbolt port? Because each PCIe card slot’s Thunderbolt interface includes two Thunderbolt ports, you can connect the interfaces together in a daisy chain to enable Echo II DV Desktop to connect to your computer with a single Thunderbolt cable.

Shared Bandwidth Diagram

Shared Bandwidth

Video Editor Working On Multiple Displays

Thunderbolt Connected

Plugged into one or two of your computer’s Thunderbol ports, the Echo II DV Desktop system enables you to connect two up to full-height, single-width professional PCIe cards.

Why Thunderbolt 3 Instead of Thunderbolt 4?
Sonnet’s line of Thunderbolt to PCIe card expansion systems rely on Thunderbolt 3 technology for maximum performance.
VIdeo Play Icon

Watch Video to Learn Why

PCIe Cards

Versatile PCIe Card Support

Supports Every Thunderbolt Compatible, Single-width, Non-GPU Card

Video PCIe Card Icon
Audio PCIe Card Icon
Networking PCIe Card Icon
SSD PCIe Card Icon
Video PCIe Card IconAudio PCIe Card IconSAS/SATA PCIe Card IconNetworking PCIe Card IconSSD PCIe Card Icon

Echo II DV Desktop supports every Thunderbolt compatible, single-width, non-GPU PCIe 4.0, 3.1, 2.0, and 1.1 card available including video capture, streaming and transcoding; SSD storage; audio DSP; 10Gb or 25Gb Ethernet; SAS or SATA host bus adapter; and other specialty types to your system.

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.

PCIe Cards Compatibility PDF

Key Features

Adds Connectivity and Capabilities Icon

Adds Connectivity & Capabilities

Connects two high-performance non-GPU PCIe cards via one or two Thunderbolt cables to your computer lacking expansion slots.

Dual Thunderbolt Interfaces Icon

Dual Thunderbolt Interfaces

One interface per slot supports full PCIe bandwidth to each installed card, enabling maximum performance at the same time.

Four Thunderbolt Ports Icons

Four Thunderbolt Ports

Two ports connect to computer for maximum performance; secondary ports support daisy-chaining of Thunderbolt interfaces to enable single-cable connection to computer.

Broad PCIe Card Compatibility Icon

Broad PCIe Card Compatibility

Every Thunderbolt compatible, single-width, non-GPU card supported regardless of length or height.

Two PCIe Slots Icon

Two PCIe 3.1 Slots

Two x16 slots support two full-height, single-width cards.

Remarkably Quiet Icon

Remarkably Quiet

Dual temperature-controlled, variable-speed Noctua fans rated at 17dBA automatically and quietly cool the cards.

40Gbps Thunderbolt System Icon

40Gbps Thunderbolt System

Supports full PCIe bandwidth for each installed card. Learn more about Thunderbolt 3 performance benefits over Thunderbolt 4.

Rugged Aluminum Housing Icon

Rugged Aluminum Housing

Provides robust and secure protection.

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 Compatible

Supports Intel Macs with Thunderbolt 3 ports.

Intel Mac and Windows Compatible Icon

Windows Compatible

Supports Windows computers with Thunderbolt 4 or Thunderbolt 3 ports.

Linux Compatible Icon

Linux Compatible

Supports Linux computers with Thunderbolt 4 or Thunderbolt 3 ports.

Free Lifetime Tech Support
Echo II DV Desktop Module with Two Auxiliary Power Cables

Two PCIe 3.1 Slots and Power to Spare

Echo II DV Desktop features two x16 PCIe slots, enabling it to support a wide variety of cards. To support power-hungry cards, it integrates a universal 400W power supply and includes dual 75W auxiliary power connectors (one for each card slot) for non-GPU cards that require extra power, including AJA® Kona® 5, Blackmagic DeckLink 8K Pro, Bluefish444 Epoch and KRONOS SDI cards, and Avid Pro Tools | HDX. Designed without a power switch, Echo II DV powers on and off automatically with the connected computer, saving energy in the long run. With no power switch, you can’t forget to turn off the system!

Overview of Echo II DV Desktop Features

Supports Low-profile as Well as Full-height PCIe Cards

Ultra-quiet Operation

Rated 17.1 dBA Icon
Noctua Fan
Noctua Fan

Dual Noctua Fans

Featuring dual Noctua fans, Echo II DV is designed to deliver ultra-quiet operation so that it can be comfortably used in noise-sensitive environments. Rated at 17.1dBA — below the 20dBA ceiling prescribed for use in recording and broadcast studios — the fans spread the spectrum of their noise to minimize the impact at any single frequency. To further ensure negligible noise levels, the fans are temperature-controlled, automatically speeding up and slowing down smoothly as needed, and the enclosure is engineered to optimize airflow over the installed cards to effectively and efficiently cool the system.

Noise Levels Comparison Chart
Comparative examples of noise levels source:
Thunderbolt Cable & ThunderLok 3 Icon

Secure Connections for High Performance

40Gbps Thunderbolt Cables and ThunderLok 3 Clips Included

Sonnet includes two Thunderbolt cables that support Thunderbolt’s full 40Gbps bandwidth and are fully compatible with Thunderbolt 4 and Thunderbolt 3 computers. Sonnet also provides two ThunderLok™ 3 Thunderbolt connector retainer clips that prevent accidental cable disconnections — just slide one 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.

Supports Full 40Gbps Thunderbolt Bandwidth IconThunderbolt Cable with ThunderLok 3
Thunderbolt Port Threaded Hole Icon

ThunderLok Advantage

Sonnet Thunderbolt expansion systems are designed with Thunderbolt ports that include threaded mounting holes for securing Sonnet ThunderLok retainer clips that prevent accidental cable disconnections.

Fastest External Interface Available

Echo II DV Desktop features dual 40Gbps Thunderbolt interfaces – one for each slot – that deliver up to 2880 MB/s of PCIe bandwidth, enabling each slot to support 4K video capture and processing cards at high frame rates, audio DSPs, and 25GbE and dual-port 10GbE network cards at full performance.

Thunderbolt 40Gbps Ports Icons
Four 40Gbps Thunderbolt Ports
Two ports are reserved for the connections to your Thunderbolt 4 or Thunderbolt 3 computer (one for each PCIe slot); the other two ports enable expansion of up to five additional Thunderbolt peripheral devices each in daisy chains.
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 secondary Thunderbolt ports using the proper cables or adapters.
15W Power Icon
Provide 15W of Power
For peripherals requiring extra power, 15 watts is provided to bus-powered devices through each secondary Thunderbolt port.
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 II DV Desktop 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 potential performance. 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

Complementary Echo II DV Products

Sonnet Echo II DV Rackmount

Rackmount Version Available

Choose between Echo II DV Rackmount and Echo II DV Desktop to suit your workflow needs. Echo II DV Rackmount mounts in a rack space 2U tall, and is only 16.5 inches deep, making it ideal for use in a wide range of popular mobile racks, carts, and rack cases, and in server rooms as well. Echo II DV Rackmount even offers space for an optional expansion module.

Sonnet xMac Studio/Echo II

xMac Studio Companion

Echo II DV Module – the heart of the Echo II DV Desktop and Echo II DV Rackmount – is also available as part of xMac™ Studio, the Sonnet 3U rackmount enclosure with Thunderbolt to PCIe card expansion system for Mac Studio computers. Combine the power of an Echo II DV Rackmount with an xMac Studio/Echo II DV to connect four bandwidth-hungry PCIe cards to a Mac Studio, each to a separate Thunderbolt port for maximum bandwidth to each card.

Sonnet DuoModo Family

Compatible with DuoModo Enclosures

Echo II DV Module is compatible with our DuoModo™ family of modular Thunderbolt expansion systems, comprised of interchangeable modules for PCIe cards, a Mac mini mounting system (with integrated 40Gbps Thunderbolt storage dock), and desktop and rackmount enclosures so you can quickly and easily interchange modules depending on your workflow.

Learn More
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 II DV Desktop