Sonnet Shipping First New Thunderbolt 2 PCIe Expansion Chassis

Sonnet today announced the first Thunderbolt 2 expansion chassis, allowing owners of late 2013-era MacBook Pro and Mac Pro models to add two or three PCIe cards to their machines.

There are three new options, desktop and rack mount three-slot chassis, plus a two-slot desktop version.

Sonnet Expansion Chassis

The Echo Express III-D, Echo Express III-R, and Echo Express SE II incorporate ultra-fast Thunderbolt 2 technology, which delivers twice the throughput of 10 Gb/sec Thunderbolt and provides sufficient bandwidth to support many of the highest-performance and most-demanding PCIe cards. The new expansion chassis support every kind of Thunderbolt-compatible PCIe card available — enabling the use of professional video capture, audio interface, 16Gb and 8Gb Fibre Channel, 10 Gigabit Ethernet, SAS and SATA HBA, and RAID controller cards with Thunderbolt-enabled iMac®, Mac® mini, Mac Pro®, MacBook Air®, and MacBook Pro® computers. Plus, the Sonnet systems' dual Thunderbolt 2 ports support full-bandwidth connectivity with Thunderbolt 2-equipped host computers, full backward compatibility with 10 Gb/sec Thunderbolt-equipped computers and devices, and daisy-chaining of other Thunderbolt 2 and Thunderbolt devices.

Customers who purchased Thunderbolt 1 equipped expansion chassis can get free upgrades to the Thunderbolt 2 version. All the Thunderbolt 2 chassis are fully backwards-compatible with older Thunderbolt equipped Macs.

The desktop three-slot version is available for $979, the rack mount three-slot is $1,199, and the two-slot desktop is $499.

Popular Stories

iPhone Air

Report: 'Virtually No Demand' for iPhone Air

Wednesday October 22, 2025 3:22 am PDT by
Apple is "drastically" cutting production of the iPhone Air and shifting focus toward the iPhone 17 and iPhone 17 Pro models, Nikkei Asia reports. The business publication claims to have learned of a major cut to iPhone Air production motivated by weaker-than-expected consumer interest, nearly to "end of production levels." Despite early reports of the iPhone Air selling out within hours of...
sam sung auction

Former Apple Employee Sam Sung Changed His Name to Avoid Attention

Wednesday October 22, 2025 4:44 pm PDT by
Back in 2012, an Apple retail employee named Sam Sung went viral because his name is similar to Samsung, one of Apple's main competitors. In a recent interview with Business Insider, he detailed that period in his life, how Apple responded, and he explained why he ultimately changed his name. Someone posted an image of Sung's Apple business card on Reddit in 2012, and it spread rapidly....
cadillac lyric infotainment

GM to Remove CarPlay from All Future Vehicles, Including Gas Cars

Wednesday October 22, 2025 11:34 am PDT by
General Motors began phasing out support for CarPlay in its electric vehicles back in 2023, leading to complaints from iPhone users, but the company has no plans to back down. In fact, GM is going further and plans to remove CarPlay from all future gas vehicles, too. In an interview with The Verge, GM CEO Mary Barra said that the company opted to prioritize its platform for EVs, but the...
All Screen iPhone 2027 Feature 1

Apple's Plan to Launch Three New iPhone Designs Allegedly Revealed

Wednesday October 22, 2025 6:24 am PDT by
Apple plans to launch a new type of iPhone every year for the foreseeable future, according to an Asia-based source. The detailed information was shared by the account "yeux1122" in a blog post on the Korean platform Naver, citing domestic trend and component research companies. Corroborating other reports, Apple will apparently launch its first foldable iPhone in 2026, featuring a...
iOS 26

iOS 26.1 Coming Soon With These 8 New Features for Your iPhone

Wednesday October 22, 2025 6:15 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. iOS 26.1 is currently in beta testing. The update will likely be released in the first half of November, and it is compatible with the iPhone 11 series and newer, but some...
ios 26 1 liquid glass opaque

iOS 26.1 Beta 4 Lets Users Control Liquid Glass Transparency with New Toggle

Monday October 20, 2025 10:57 am PDT by
With the fourth betas of iOS 26.1, iPadOS 26.1, and macOS 26.1, Apple has introduced a new setting that's designed to allow users to customize the look of Liquid Glass. The toggle lets users select from a clear look for Liquid Glass, or a tinted look. Clear is the current Liquid Glass design, which is more transparent and shows the background underneath buttons, bars, and menus, while tinted ...
maxresdefault

Apple's iPhone Air Experiment Fails as Supply Chain Cuts Production by 80%

Wednesday October 22, 2025 10:48 am PDT by
iPhone Air demand failed to meet Apple's expectations and the company's supply chain is scaling back shipments and production, reports Apple analyst Ming-Chi Kuo. Subscribe to the MacRumors YouTube channel for more videos. Suppliers are expected to reduce capacity by more than 80 percent between now and the first quarter of 2026, and some components with longer lead times will be discontinued ...
All Screen iPhone 2027 Feature 1

Report: Apple to Skip 'iPhone 19' Name for 'iPhone 20'

Thursday October 23, 2025 4:28 am PDT by
Apple's new iPhone lineup launched in the fall of 2027 will be called the "iPhone 20" models, rather than the "iPhone 19," according to research firm Omdia. Speaking at a conference in Seoul (via ETNews), Omdia Chief Researcher Heo Moo-yeol corroborated rumors that Apple plans to move the launch of its standard iPhone to the first half of the year and provided some additional clarity about...
iOS 26

What's New in iOS 26.1 Beta 4

Monday October 20, 2025 1:02 pm PDT by
Even though we're at the fourth beta of iOS 26.1, Apple is continuing to add new features. In fact, the fourth beta has some of the biggest changes that we'll get when iOS 26.1 releases to the public later this month. We've rounded up what's new below. Liquid Glass Transparency Toggle Apple added a toggle for customizing the look of Liquid Glass. In Settings > Display and Brightness,...

Top Rated Comments

KindredMAC Avatar
154 months ago
Is that price for real???
F-that...

Don't see many of these moving...
Score: 12 Votes (Like | Disagree)
barkmonster Avatar
154 months ago
Why aren't graphics cards compatible?

There really should a Thunderbolt usage for beginners FAQ on here somewhere and if there is, it should be linked on every thunderbolt article for easy reference.

Thunderbolt2 offers 2 x 10Gbit/s channels combined. Thunderbolt offers them as seperate channels. Neither of those speeds offer anywhere near the bandwidth of a 16xPCie card and even then, most higher end GPUs are double-wide and need internal power. You'd end up using 2 slots for 1 card, leaving only 1 PCIe slot for other uses and then cripple the card with bandwidth that doesn't even come close to 4xPCIe.
Score: 6 Votes (Like | Disagree)
wikiverse Avatar
154 months ago
No, these are for professionals.

These aren't for home users and gamers.

The audience is defined by the price. Home users and gamers don't spend $1000 on PCI expansion slots.

The audience is defined by the need to use PCI cards and the purchase of a TB or TB2 equipped computer.

Price doesn't determine audience for any product. It that were true, college students wouldn't be carrying around rMBPs and the iPhone wouldn't be the top selling US handset with AT&T the biggest telco.

The idea that only a professional would buy expensive equipment is just wrong, along with the idea that home users and gamers are all poor and couldn't possibly be able to afford things they want.

Considering that most desktop PCs offer PCI expansion slots for free, and they are faster than TB2, a professional is more likely to invest in the product that gives maximum return for minimum outlay - in which case 'professionals' wouldn't be buying this product at all.

This is expensive because it is a niche product in terms of utility, not because 'professionals' are willing to pay the asking price.
Score: 5 Votes (Like | Disagree)
Radiating Avatar
154 months ago
These dont officially support Graphics Cards, right?

I heard something about intel not approving external GPus andthen driver probs?

Graphics cards work fine in windows in every current mac except for the Mac mini , there is no OS X driver support yet. I was one of the few people who set up a geforce Titan over thunderbolt to a MacBook Pro when the last version first came out.
Score: 5 Votes (Like | Disagree)
imageWIS Avatar
154 months ago
Is that price for real???
F-that...

Don't see many of these moving...
That's the prob with Thunderbolt: the prices are astronomical UNLESS you are a corporation or very wealthy. The rest of us are SOL. :mad:
Score: 4 Votes (Like | Disagree)
macduke Avatar
154 months ago
Is that price for real???
F-that...

Don't see many of these moving...

Again, these are for professionals.

--

I'm going to assume this can't handle higher-end video cards on PCI Express 3.0? Still not enough bandwidth.
Score: 4 Votes (Like | Disagree)