Published: Tue, March 05, 2019
IT | By Jonathon Greene

USB 4 Officially Announced: Supports Up to 40Gbps Transfer Speed

USB 4 Officially Announced: Supports Up to 40Gbps Transfer Speed

That said, it's unlikely that we'll see products featuring USB4 anytime soon given that the technical specifications for USB 3.2 2×2 have only just been revealed. The latest version, which is still in development, is based on the Thunderbolt protocol specification and provides a host of improvements including faster speeds.

The new USB4 architecture defines a method to share a single high-speed link with multiple end device types dynamically that best serves the transfer of data by type and application. Today Thunderbolt 3 was released to the USB Promoter Group, who promptly undid the insanity that the USB-IF released upon us last week by promptly announcing it will be the basis of USB 4. This may suggest that Intel may be working on a Thunderbolt 4 protocol that may not be compatible with USB4.

For other parameters, the USB 4 support up to 100W of power, an external graphics card, two 4K displays or a single 5K display.

USB is one of tech's ultimate success stories - a universal standard that took off in every way. The 20Gbps USB 3.2, on the other hand, will be called USB 3.2 Gen 2x2.

Intel's Thunderbolt 3 uses the USB-C connector, which is sort of confusing. It will maintain backwards compatibility with previous Thunderbolt generations as well as the various flavours of USB 2 and 3. That's finally happening, with the technology being integrated into USB 4.

Multiple data and display protocols to efficiently share the total available bandwidth over the bus . 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. The physical connector of this standard will be identical to the USB-C of the Thunderbolt 3, which means that all existing Thunderbolt 3 cables should be compatible.

Our expectations of common screen resolution and the fidelity of connected experiences ratchet up every day, but USB4 could very well accelerate those to the point where 4K or even sharper displays are the norm and file sizes in the gigabytes just aren't that big anymore. Coincident with the release of the USB4 specification, the release of an updated USB Type-C Specification will be made to comprehend USB4 bus discovery, configuration and performance requirements. It is expected that the original version will be released in the second half of this year. Branding and marketing guidelines will be established after the final specification is published.

"Releasing the Thunderbolt protocol specification is a significant milestone for making today's simplest and most versatile port available to everyone".

One of the great benefits of basically adopting the Thunderbolt 3 standard as USB4 are that there are already lots of Thunderbolt devices available, over 450.

Brad Saunders, USB Promoter Group Chairman offers the following statement.

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