USB 4 Is Coming. What Changes Will The New Standard Bring? It's Not Just Doubling The Transmission Rate

Morning news on March 5, USB extension organization (USB Promoter Group) first announced the upcoming release of lightning protocol based USB 4 standard, realize the underlying fusion of thunder and lightning, the USB protocol, compared with USB 3.2 double peak transmission rate.

At the same time, Intel has officially announced that it will open up the Thunderbolt protocol to USB promoters, allowing manufacturers to build Thunderbolt compatible chips and devices for free.

The USB Promoter Group today announced thepending release of the USB4 specification, a major update to deliver the next generation USB architecture that compliments and builds on 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. It doubles the bandwidth of USB and enables multiple simultaneous data and display protocols.

Not long ago, USB promotion organization just published the latest USB naming specification, the original USB 3.0 and USB 3.1 naming will be canceled, all USB standards will be called USB 3.2, USB 3.0 to USB 3.2 are called USB 3.2 Gen 1, USB 3.2 Gen 2, USB 3.2 Gen 2x2. Now, USB 4 has been announced by the USB promotion group, doubling the speed of USB 3.2 Gen 2x2 to 40 Gbps, the same as lightning 3.


Now, according to Intel, the industry is moving faster to adopt Thunderbolt 3. Thunder 3 got popularity in Windows10 and macOS and Linux, the number of PC that USES this port is continuing the momentum that doubles every year, already head toward 10 million mark, if all Mac equipped thunder 3 port. More than 400 PCS are designed with thunder 3. The number of peripherals continues to double every year, with more than 450 certified devices, including docking stations, displays, storage, and external graphics CARDS

So what are the benefits of USB 4? USB 4 popularize thunder 3. After all, Intel has announced to open to the public and waived the license fee, and will integrate support for thunder 3 at the processor level starting from 10nm Ice Lake. Of course, the USB 4 is much more open than the lightning 3, which requires strict Intel certification (only 463 to date).


In addition, USB 4 can provide up to 100W power, external video card, two 4K monitors or a single 5K monitor. In addition, unlike USB 3.0/3.1/3.2, which used color interface to distinguish between generations, USB 4 has no such requirement, and only type-c is recommended.