Specification defines delivering up to 80 Gbps over USB Type-C®
Key characteristics of the updated USB4 solution include:
Up to 80 Gbps operation, based on a new physical layer architecture, using existing 40 Gbps USB Type-C passive cables and newly-defined 80 Gbps USB Type-C active cables.
Updates to data and display protocols to better use the increase in available bandwidth.
Backward compatibility with USB4 Version 1.0, USB 3.2, USB 2.0 and Thunderboltâ„¢ 3.
Power Delivery 3.1
Increased power levels from existing USB standards up to 240W.
New 28V, 36V, and 48V fixed voltages enable up to 140W, 180W and 240W power levels, respectively.
An adjustable voltage supply mode allows the device being powered an ability to request intermediate voltages between 15V and up to the maximum available fixed voltage of the charger.