USB4 Introduction | Official Support

FAQ

USB4 Introduction

USB4® represents a major update to deliver the next generation of USB architecture – enabling the highest USB bandwidth available and extending USB Type-C® performance.

The USB4® Specification complements and builds upon the existing USB 3.2 and 2.0 architectures. Based on the Thunderbolt™ protocol specification contributed by the Intel Corporation, USB4® doubles the maximum aggregate bandwidth of USB and enables multiple simultaneous data and display protocols.

Feature

●The fastest USB4® speed is increased to Gen3 X2 = 40Gbps

●USB4® can backward compatibility with USB 3.2, USB 2.0 and Thunderbolt 3

●USB4® supports Host to Host (host and host docking transmission signal)

Specification

USB Version			Logo	Transfer Speed (bit)	Theoretical Transfer Speed (Byte)
Mode		Branding Name
USB4®	Gen 2x2	USB4® 20Gbps		20Gbps	2.4GB/s
	Gen 3x2	USB4® 40Gbps		40Gbps	4.8GB/s

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