Sonnet's Latest Thunderbolt 4 Dock Features Internal SSD Enclosure

Sonnet this week announced its latest Thunderbolt 4 dock, the Echo 20, and one of its key features is an internal enclosure for an M.2 NVMe SSD. This allows the dock to double as an external storage drive for a Mac.

Sonnet Echo 20 Thunderbolt 4 Dock
Accessible from the bottom of the dock, the enclosure can hold up to an 8TB SSD and supports data transfer speeds up to 800 MB/s, according to Sonnet.

The dock is also equipped with an upstream Thunderbolt 4 port that provides up to 100W of pass-through charging to a connected Mac, two downstream Thunderbolt 4 ports, four USB-C ports with up to 10 Gbps speeds, four USB-A ports with up to 10 Gbps speeds, one HDMI 2.1 port, one 2.5 Gigabit Ethernet port, one 3.5mm combo audio jack, one 3.5mm microphone jack, left and right RCA line out jacks, and one SD card slot.


The dock is designed for use with devices equipped with Thunderbolt ports, including all of Apple's latest Mac and iPad Pro models, providing expanded connectivity for external displays, USB accessories, and other peripherals.

The Echo 20 is available to order on Sonnet's website for $299.99 in the United States and will be available at additional retailers soon. The dock has an external power supply and ships with a 0.7-meter Thunderbolt 4 cable in the box. Sonnet has a similar Thunderbolt dock that supports dual SSDs for up to 16TB of storage, but it has fewer ports.

Popular Stories

streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
iOS 26 on Three iPhones

iOS 27 Will Reportedly Have Two Key Upgrades

Sunday November 23, 2025 8:48 am PST by
iOS 27 will reportedly have two major elements: quality improvements and new AI features. In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features. Gurman said there is one exception to this rule, though, as he expects...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
General Black Friday Deals 25 Red

Apple Black Friday Deals Available Now on AirPods, iPads, Accessories, and More

Friday November 21, 2025 8:48 am PST by
We're only a few days away from Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When...
maxresdefault

The MacRumors Show: iPhone 18 Pro Looks Like a Huge Upgrade

Friday November 21, 2025 9:10 am PST by
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models. Subscribe to The MacRumors Show YouTube channel for more videos Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
apple news banner

Apple News Loses CNN

Monday November 24, 2025 7:56 am PST by
American multinational news company CNN has abruptly pulled its content from Apple News, Semafor reports. CNN quietly removed its stories from Apple News over the weekend and there is no longer a feed from the network to subscribe to in the app. This effectively ends its distribution agreement with Apple while the two sides negotiate new terms. Discussions are apparently ongoing and CNN's...
amazon black friday

Amazon Kicks Off Black Friday Sale With Major Discounts on Apple Accessories, TVs, and More

Sunday November 23, 2025 7:12 am PST by
Black Friday deals have begun, and Amazon is one of the best places you can find steep discounts on numerous products this week. We've already collected all of the best Apple-related deals you'll find at Amazon (and other retailers) in our Apple Black Friday Deals post, so below you'll find other discounts on devices like Anker accessories, Beats headphones, video games, TVs, and more. Note:...
Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...
Apple Foldable Thumb

Crease-Free iPhone Fold on Track for 2026 Launch as Development Advances

Monday November 24, 2025 10:25 am PST by
Apple is making progress on the development of the book-style foldable iPhone expected in 2026, according to a report from Chinese site UDN. The device has reportedly entered the engineering validation stage, and Apple is gearing up for mass production. Citing supply chain sources, UDN says that Apple has solved "the crease problem" that has plagued most foldable smartphones, and the...

Top Rated Comments

tan.shu Avatar
32 months ago
why only 800 MB/s?
Score: 20 Votes (Like | Disagree)
Rychiar Avatar
32 months ago
ya lost me at 800mbps:confused: who would pay for that? my current external NVME gets 3000+ mb/s. like why even be thunderbolt 4 and cap it there...
Score: 12 Votes (Like | Disagree)
6787872 Avatar
32 months ago
would this gracefully be able to eject or require manual ejection every time you want to unplug from the dock?
Score: 7 Votes (Like | Disagree)
bradman83 Avatar
32 months ago

why only 800 MB/s?
I would venture a guess it’s because it has to share bandwidth with other functions of the dock (display bandwidth especially), whereas a dedicated Thunderbolt enclosure has that 40 Gbps all to itself.
Score: 7 Votes (Like | Disagree)
wesley96 Avatar
32 months ago
It is likely that this product’s controller chip is dedicating one of the four PCIe lanes available for Thunderbolt 3 / 4 connectivity to the SSD slot. TB3/4 is effectively an externalized PCIe 3.0 x 4, with each lane providing 10Gbps bandwidth. Since there are several protocol overheads including 8b/10b encoding for data, it’s easy to see the 10Gbps dwindle to 800MB/s max throughout.

BTW, the tech specs say that it uses the M.2 NVME SSDs, not the MSATA variety. so the limit is not due to SATA3’s 6Gbps max bandwidth. The SSDs using that standard maxes out at ~550MB/a anyway.
Score: 6 Votes (Like | Disagree)
pmasters Avatar
32 months ago
$300 is way overpriced, especially for the weak ass speeds.
Score: 6 Votes (Like | Disagree)