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Title    Forget USB 3.2: Thunderbolt 3 Will Become the Basis of USB 4
Date    Tuesday March 05 2019, @03:33AM
Author    chromas
from the dept.

takyon writes:

USB 3.2 Gen 2×2 isn't even my final form:

Fulfilling its 2017 promise to make Thunderbolt 3 royalty-free, Intel has given the specification for its high-speed interconnect to the USB Implementers Forum (USB-IF), the industry group that develops the USB specification. The USB-IF has taken the spec and will use it to form the basis of USB4, the next iteration of USB following USB 3.2.

Thunderbolt 3 not only doubles the bandwidth of USB 3.2 Gen 2×2, going from 20Gb/s to 40Gb/s, it also enables the use of multiple data and display protocols simultaneously. We would expect the USB4 specification to be essentially a superset of the Thunderbolt 3 and USB 3.2 specifications, thus incorporating both the traditional USB family of protocols (up to and including the USB 3.2 Gen 2×2) and the Thunderbolt 3 protocol in a single document. Down the line, this should translate into USB4 controllers that support the whole range of speeds.

Lost? Frightened? Confused? Good!

Also at AnandTech, The Verge, and Engadget.

Original Submission


  1. "takyon" -
  2. "USB 3.2 Gen 2×2" -
  3. "my final form" -
  4. "2017 promise to make Thunderbolt 3 royalty-free" -
  5. "given the specification" -
  6. "will use it to form the basis of USB4" -
  7. "following USB 3.2" -
  8. "USB 3.2 Gen 2×2" -
  9. "AnandTech" -
  10. "The Verge" -
  11. "Engadget" -
  12. "Original Submission" -

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