Universal Serial Bus interfaces for data and power - Part 4-1: Universal Serial Bus 4 ™ Specification
USB 3.1 and USB 3.2 were evolutionary steps to increase bandwidth. The goal for USB4 remains the same with the added goal of helping to converge the USB Type-C® connector ecosystem and minimize end-user confusion. Several key design areas to meet this goal are listed below:
• Offer display, data, and load/store functionality over a single USB Type-C connector.
• Retain compatibility with existing ecosystem of USB and Thunderbolt™ products.
• Define Port Capabilities for predictable and consistent user experience.
• Provide increased host flexibility to configure bandwidth, power management, and other performance-related parameters for system needs
This document contains USB4™ Specification, Version 1.0 with Errata and ECN through May 19, 2021.