Sonnet Technologies yesterday launched its first Thunderbolt 3-to-PCIe card expansion systems for 2016 MacBook Pros, the Echo Express SEL — Thunderbolt 3 Edition and the Echo Express SE I — Thunderbolt 3 Edition.

The SEL and SE I are compact and lightweight single-slot expansion systems that differ only in size and enable users to take advantage of the Thunderbolt 3's 2,750 MB/s of PCI Express bandwidth to support high performance adapter cards.

Sonnet PCIe Thunderbolt 3

The Echo Express SE I — Thunderbolt 3 Edition weighs just 2.6 pounds and measures 5.6 inches wide by 8.6 inches deep by 3.5 inches tall, accommodating one-half length (up to 7.75 inches long), full-height, single-width PCIe 3.0 card with additional mounting space for a daughter card. With its Thunderbolt 3 interface, the SE I delivers ample bandwidth for the majority of Thunderbolt-compatible PCIe cards including pro video capture, digital audio interface, 6Gbps or 12Gbps SAS or SATA host bus adapters, 16Gb or 8Gb Fibre Channel, 10 Gigabit Ethernet, and RAID controller PCIe cards.

The Echo Express SEL — Thunderbolt 3 Edition is the smallest and quietest Thunderbolt 3 chassis yet, measuring 4 inches wide by 8.25 inches long by 2.8 inches tall and weighing just 1.75 pounds. The SEL houses one low-profile, single-width PCIe 3.0 card, including the majority of the most popular Thunderbolt-compatible 16Gb and 8Gb Fibre Channel, 40 and 10 Gigabit Ethernet, 6Gbps or 12Gbps SAS and SATA host bus adapters, RAID controller cards, and even low-profile pro video capture cards like the BlueFish 444 Epoch 4K Neutron.

The Echo Express SE I and Echo Express SEL Thunderbolt 3 Editions feature dual 40Gbps Thunderbolt 3 ports that support the daisy chaining of up to five additional Thunderbolt peripheral devices. Both models support backward compatibility for 20Gbps Thunderbolt 2- and 10Gbps Thunderbolt-equipped devices when connected via the Apple® Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter.

As an added benefit, the second Thunderbolt 3 port also supports a variety of displays and a multitude of USB 3.1, USB 3.0, and USB 2.0 devices when connected with the proper cable, and also fully supports the DisplayPort 1.2 protocol, which enables streaming to one 4K display at 120Hz, or two 4K displays at 60Hz, or one 5K display at 60Hz.

The list of compatible PCIe cards is available on Sonnet's website. Sonnet is also offering Thunderbolt 3 upgrade cards for existing Thunderbolt 2 Echo Express SEL and SE I expansion systems, enabling those models with all the capabilities of the new Thunderbolt 3 Editions. 

Top Rated Comments

theitsage Avatar
116 months ago
I guess still no GPU support? Apple is sleeping ZzzzZZzz
Can firms start getting on those e-GPU's please? That is the undeniable / exciting future!!!
This is good news ahead of NAB where we'll likely see support (or custom solutions) for RED PCIe cards like the RED ROCKET and RED ROCKET X for Thunderbolt 3.

Support eGPU from Apple is badly needed. Integrated cards just do not deliver the type of performance required for many video editing and motion graphics tools.

Getting updated Mac Pro's out in the market should be a priority as well. Hopefully before NAB...
Nice. Waiting for e-gpu though.
The dedicated graphics card is what kept me buying the MacBook Pro (and the 15-inch screen size). If they made a laptop with a 14-15 inch screen that I could plug into a dock/eGPU for the occasion that I want to run a game I'd buy it in a heartbeat.
This is useless with it being unable to plug a real GPU in.
If you want an eGPU enclosure, get the AKiTiO Node. I have been using one and it works with all Thunderbolt equipped Macs (oldest being a 2011 17" MacBook Pro) in both macOS and Windows - more info on eGPU for Mac ('https://egpu.io/thunderbolt-egpu-for-mac-2017-update-macos-sierra/').



Score: 11 Votes (Like | Disagree)
Jsameds Avatar
116 months ago
Sweet, now I can hook up my 10/100 ethernet card
Pfft. I sneer in the face of 10/100

I'll be networking this baby with Appletalk.
Score: 8 Votes (Like | Disagree)
Onexy Avatar
116 months ago
I guess still no GPU support? Apple is sleeping ZzzzZZzz
Score: 6 Votes (Like | Disagree)
Dilster3k Avatar
116 months ago
Can firms start getting on those e-GPU's please? That is the undeniable / exciting future!!!
Score: 5 Votes (Like | Disagree)
strukt Avatar
116 months ago
Nice. Waiting for e-gpu though.
Score: 4 Votes (Like | Disagree)
noone Avatar
116 months ago
The dedicated graphics card is what kept me buying the MacBook Pro (and the 15-inch screen size). If they made a laptop with a 14-15 inch screen that I could plug into a dock/eGPU for the occasion that I want to run a game I'd buy it in a heartbeat.
Score: 3 Votes (Like | Disagree)

Popular Stories

iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
ios 18 to ios 26 upgrade

Apple Pushes iPhone Users Still on iOS 18 to Upgrade to iOS 26

Tuesday December 2, 2025 11:09 am PST by
Apple is encouraging iPhone users who are still running iOS 18 to upgrade to iOS 26 by making the iOS 26 software upgrade option more prominent. Since iOS 26 launched in September, it has been displayed as an optional upgrade at the bottom of the Software Update interface in the Settings app. iOS 18 has been the default operating system option, and users running iOS 18 have seen iOS 18...
iOS 26

Apple Seeds iOS 26.2 and iPadOS 26.2 Release Candidates to Developers and Public Beta Testers

Wednesday December 3, 2025 10:33 am PST by
Apple today seeded the release candidate versions of upcoming iOS 26.2 and iPadOS 26.2 updates to developers and public beta testers, with the software coming two weeks after Apple seeded the third betas. The release candidates represent the final versions of iOS 26.2 and iPadOS 26.2 that will be provided to the public if no further bugs are found during this final week of testing....
Photos App Icon Liquid Glass

John Gruber Shares Scathing Commentary About Apple's Departing Software Design Chief

Thursday December 4, 2025 9:30 am PST by
In a statement shared with Bloomberg on Wednesday, Apple confirmed that its software design chief Alan Dye will be leaving. Apple said Dye will be succeeded by Stephen Lemay, who has been a software designer at the company since 1999. Meta CEO Mark Zuckerberg announced that Dye will lead a new creative studio within the company's AR/VR division Reality Labs. On his blog Daring Fireball,...
iOS 26

When Will Apple Release iOS 26.2?

Monday December 1, 2025 4:37 pm PST by
We're getting closer to the launch of the final major iOS update of the year, with Apple set to release iOS 26.2 in December. We've had three betas so far and are expecting a fourth beta or a release candidate this week, so a launch could follow as soon as next week. Past Launch Dates Apple's past iOS x.2 updates from the last few years have all happened right around the middle of the...
Intel Inside iPhone Feature

Apple's Return to Intel Rumored to Extend to iPhone

Friday December 5, 2025 10:08 am PST by
Intel is expected to begin supplying some Mac and iPad chips in a few years, and the latest rumor claims the partnership might extend to the iPhone. In a research note with investment firm GF Securities this week, obtained by MacRumors, analyst Jeff Pu said he and his colleagues "now expect" Intel to reach a supply deal with Apple for at least some non-pro iPhone chips starting in 2028....
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...
ive and altman

Jony Ive's OpenAI Device Barred From Using 'io' Name

Friday December 5, 2025 6:22 am PST by
A U.S. appeals court has upheld a temporary restraining order that prevents OpenAI and Jony Ive's new hardware venture from using the name "io" for products similar to those planned by AI audio startup iyO, Bloomberg Law reports. iyO sued OpenAI earlier this year after the latter announced its partnership with Ive's new firm, arguing that OpenAI's planned "io" branding was too close to its...
iphone air camera

iPhone Air's Resale Value Has Dropped Dramatically, Data Shows

Thursday December 4, 2025 5:27 am PST by
The iPhone Air has recorded the steepest early resale value drop of any iPhone model in years, with new data showing that several configurations have lost almost 50% of their value within ten weeks of launch. According to a ten-week analysis published by SellCell, Apple's latest lineup is showing a pronounced split in resale performance between the iPhone 17 models and the iPhone Air....
iPhone 17 Pro Cosmic Orange

iPhone 17 Pro Lost a Camera Feature Pro Models Have Had Since 2020

Thursday December 4, 2025 5:18 am PST by
iPhone 17 Pro models, it turns out, can't take photos in Night mode when Portrait mode is selected in the Camera app – a capability that's been available on Apple's Pro devices since the iPhone 12 Pro in 2020. If you're an iPhone 17 Pro or iPhone 17 Pro Max owner, try it for yourself: Open the Camera app with Photo selected in the carousel, then cover the rear lenses with your hand to...