The USB4 specification for a new version of USB was today published by the USB Implementers Forum giving us details on what to expect from the next-generation USB architecture following a preview back in March.
USB4 is a major update that “complements and builds upon” the current USB 3.2 2×2 (USB-C) and USB 2.0 architectures. According to the USB-IF, the USB4 architecture is based on Thunderbolt, doubling the maximum bandwidth of USB and allowing for multiple simultaneous data and display protocols.
The USB-IF outlined key specifications of the USB4 architecture, such as 40Gb/s speeds (twice the current 20Gb/s maximum) and backwards compatibility with USB 3.2 and Thunderbolt 3.
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