voltage - Why does USB have Vcc=5V and high=3.3V? - Electrical Engineering Stack Exchange
What is the exact voltage of a standard USB data signal in either data wire? I'd assume they are the same. I know that the power wires are 5 volts. - Quora
Designing In USB Type-C and Using Power Delivery | DigiKey
USB2.0 Technical Manual
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USB-IF Compliance Updates
USB-IF Compliance Updates
Differential signalling - Wikipedia
Agilent Technologies N5416A Automated USB 2 - ppt video online download
USB System Design Considerations: Switches and Redrivers
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USB 101: An Introduction to Universal Serial Bus 2.0
USB Dedicated Charging Port Controller and Power Switch. datasheet (Rev. A)
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USB (Communications) - Wikipedia
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USB keyboard mouse protocols system timing auxiliary device signal definitions
signal eye voltage level too high USB 2.0 Upstream near end - Electrical Engineering Stack Exchange
