供大家学习，原版可在USB官网（https://www.--usb.org/）下载
Release 2.0-2019 Universal Serial Bus Type-C Cable and Connector Specification.zip
USB4 GEN3 PLUG CONNECTOR HIGH SPEED REQUIREMENTS 2020_06_29.pdf
USB4 Electrical CTS Rev 1.0-2020 Universal Serial Bus 4 Router Assembly Electrical Compliance Test Specification.pdf
USB4 1.0-2020 USB4 1.0 with errata through 2020（多个集合）.zip