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

iphone 16 display

iPhone 17's Scratch Resistant Anti-Reflective Display Coating Canceled

Monday April 28, 2025 12:48 pm PDT by
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors. Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
iPhone 17 Air Pastel Feature

iPhone 17 Reaches Key Milestone Ahead of Mass Production

Monday April 28, 2025 8:44 am PDT by
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report. iPhone 17 Air mockup based on rumored design The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Beyond iPhone 13 Better Blue

20th Anniversary iPhone Likely to Be Made in China Due to 'Extraordinarily Complex' Design

Monday April 28, 2025 4:29 am PDT by
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman. In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
iphone 17 air iphone 16 pro

iPhone 17 Air USB-C Port May Have This Unusual Design Quirk

Wednesday April 30, 2025 3:59 am PDT by
Apple is preparing to launch a dramatically thinner iPhone this September, and if recent leaks are anything to go by, the so-called iPhone 17 Air could boast one of the most radical design shifts in recent years. iPhone 17 Air dummy model alongside iPhone 16 Pro (credit: AppleTrack) At just 5.5mm thick (excluding a slightly raised camera bump), the 6.6-inch iPhone 17 Air is expected to become ...
apple watch ultra yellow

What's Next for the Apple Watch Ultra 3 and Apple Watch SE 3

Friday April 25, 2025 2:44 pm PDT by
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too. 2025 Apple Watch Ultra 3 Apple didn't update the...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching Later This Year With These 13 New Features

Wednesday April 23, 2025 8:31 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Tuesday April 29, 2025 1:30 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
iPhone 17 Pro on Desk Feature

All iPhone 17 Models Again Rumored to Feature 12GB of RAM

Tuesday April 29, 2025 3:36 am PDT by
All upcoming iPhone 17 models will come equipped with 12GB of RAM to support Apple Intelligence, according to the Weibo-based leaker Digital Chat Station. The claim from the Chinese leaker, who has sources within Apple's supply chain, comes a few days after industry analyst Ming-Chi Kuo said that the iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max will all be equipped with 12GB of RAM. ...

Top Rated Comments

tan.shu Avatar
24 months ago
why only 800 MB/s?
Score: 20 Votes (Like | Disagree)
Rychiar Avatar
24 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
24 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
24 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
24 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
24 months ago
$300 is way overpriced, especially for the weak ass speeds.
Score: 6 Votes (Like | Disagree)