USB Implementers Forum (USB-IF) announces today the publication of the USB4 specification that was previously introduced March this year. The new USB4 specification details the next-generation USB architecture that complements and builds upon the existing USB 3.2 and USB 2.0 architectures. The USB4 architecture is based on the Thunderbolt™ protocol specification recently contributed by Intel Corporation to the USB Promoter Group. It doubles the maximum aggregate bandwidth of USB and enables multiple simultaneous data and display protocols. Since its initial announcement, USB Implementers Forum has been working with over 50 companies for the development of USB4 which offers over 40Gbps on certified cables and connections. USB4 specification is now officially published by USB-IF and available for download at www.usb.org.
USB4 Key Features USB4
- Two-lane operation using existing USB Type-C® cables and up to 40Gbps operation over 40Gbps certified cables
- Multiple data and display protocols that efficiently share the maximum aggregate Bandwidth
- Backward compatibility with USB 3.2, USB 2.0 and Thunderbolt 3
As the USB Type-C connector has evolved into the role as the external display port of many host products, the USB4 specification provides the host the ability to optimally scale allocations for display data flow. Even as the USB4 specification introduces a new underlying protocol, compatibility with existing USB 3.2, USB 2.0 and Thunderbolt 3 hosts and devices are supported; the resulting connection scales to the best mutual capability of the devices being connected.
The upcoming USB Developer Days 2019 will include detailed technical training covering the USB4 specification and the latest for USB Type-C, USB Power Delivery, and new USB-IF branding strategies. Registration information for the following opportunities is available at www.usb.org.