Sonnet Shipping First New Thunderbolt 2 PCIe Expansion Chassis - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

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

imac video apple feature

Apple Released Yet Another New Product Today

Friday March 20, 2026 2:39 pm PDT by
Apple has unveiled a whopping nine new products so far this March, including an iPhone 17e, iPad Air models with the M4 chip, MacBook Air models with the M5 chip, MacBook Pro models with M5 Pro and M5 Max chips, the all-new MacBook Neo, an updated Studio Display, a higher-end Studio Display XDR, AirPods Max 2, and now the Nike Powerbeats Pro 2. iPhone 17e features the same overall design as...
ios 26 4 pastel

iOS 26.4: Top 10 New Features Coming to Your iPhone

Friday March 20, 2026 2:44 pm PDT by
iOS 26.4 isn't the major update with new Siri features that we hoped for, but there are some useful quality of life improvements, and a little bit of fun with an AI playlist generator and new emoji characters. Playlist Playground - Apple Music has a Playlist Playground option that lets you generate playlists from text-based descriptions. You can include moods, feelings, activities, or...
HomePod mini and Apple TV Sage

New Apple TV and HomePod Mini Remain 'Ready' to Launch

Sunday March 22, 2026 6:33 am PDT by
Apple has unveiled nine new products this month, but the wait continues for the next-generation Apple TV 4K and HomePod mini models. In his Power On newsletter today, Bloomberg's Mark Gurman said new versions of the Apple TV and HomePod mini have been "ready" since last year, but he reiterated that Apple has held off on releasing them until the more personalized version of Siri and other...

Top Rated Comments

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

Don't see many of these moving...
Score: 12 Votes (Like | Disagree)
159 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)
159 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)
159 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)
159 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
159 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)
Related Apple News: Ipad Air | Iphone 18 Pro | Change Airtag Battery | Ios 26 2 Make Your Iphone Screen Flash For Alerts | Iphone