Sonnet Echo 21 Thunderbolt 5 dock adds so many ports to your MacBook Pro
By Mike Wuerthele
Published on April 1, 2026.
Sonnet's Echo 21 Thunderbolt 5 SuperDock is a massive connectivity upgrade, adding 12 USB and Thunderbolt ports, storage, and more to your Mac with one cable. The dock includes a total of three Thunderbolt 5 ports, five USB-C charging ports, four USB-A ports, two Video and DisplayPort connections, and 10-Gig Ethernet for fast networking and Hi-Res audio output. The Echo 21 is available in two forms: with and without internal storage. However, the lack of internal storage capability is not widely requested by some users, such as government agencies and corporate environments.
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