Q65259839

USB 40Gbps, 100W cable|thumb Universal Serial Bus 4 (USB4), sometimes erroneously referred to as USB 4.0, is the most recent technical specification of the USB (Universal Serial Bus) data communication standard. The USB Implementers Forum announced USB4 in 2019.

Key facts

Connector.name: USB4
Connector.type: USB
Connector.logo: 220px|Deprecated USB4 40 Gbps logo
Connector.caption: Deprecated USB4 40 Gbps logo
Connector.designer: USB Promoter Group
Connector.superseded: USB 3.2
Connector.daisy_chain: No
Connector.maximum_voltage: 48 V (PD 3.1)
Connector.maximum_current: 5 A (PD)
Connector.audio_signal: DisplayPort
Connector.video_signal: DisplayPort
Connector.data_signal: USB or PCIe

Article

38 sections

Contents

History
USB4 Version 1.0 <span class="anchor" id="V1.0"></span>
USB4 Version 2.0 <span class="anchor" id="V2.0"></span>
Functionality of USB4 ports
USB 2.0 DFP features
USB 3.x DFP features
DP Alt Mode DFP features
Thunderbolt 3 Alt Mode DFP/UFP features
Power transfer features for DFP
USB4 hubs & docks
USB4 protocol/connections
General principles of USB4
Protocol input/output adapters
USB3 Gen X tunneling
USB3 Gen T tunneling
DP tunneling
PCIe tunneling
USB4 signaling modes
USB4 capabilities by device type
USB4 hub
USB4-based dock
USB4 peripheral device
Cable compatibility
Cable naming and relation to specification versions
USB4 cable compatibility
DP Alt Mode support for USB4 cables
Thunderbolt compatibility
Thunderbolt 3
Thunderbolt 4
Thunderbolt 5
Pinout
Software support
Connection manager
Hardware support
Known USB4 controllers
References
Specification References
External links

USB 40Gbps, 100W cable|thumb

Universal Serial Bus 4 (USB4), sometimes erroneously referred to as USB 4.0, is the most recent technical specification of the USB (Universal Serial Bus) data communication standard. The USB Implementers Forum announced USB4 in 2019.