Oct 19, 2022 12:00:00

Specification of 'USB4 Version 2.0' that supports data transfer at maximum 120 Gbps will be released

On September 1, 2022, part of the specifications of `` USB4 Version 2.0 ''

was clarified , but the USB Implementers Forum (USB-IF), which is newly formulating specifications for the USB standard, announced that USB4 Version 2.0 released detailed specifications. As a result, it has become clear that USB4 Version 2.0 supports ultra-high speed data transfer of 120 Gbps.

USB-IF USB 80Gbps Announcement_FINAL_v2.pdf
(PDF file) https://www.usb.org/sites/default/files/2022-10/USB-IF%20USB%2080Gbps%20Announcement_FINAL_v2.pdf

USB4® Specification v2.0 | USB-IF
https://www.usb.org/document-library/usb4r-specification-v20

USB-IF Announces Publication of New USB4® Specification Enabling USB 80Gbps Performance | Business Wire
https://www.businesswire.com/news/home/20221017006055/en/

Part of the USB4 Version 2.0 specification was announced on September 1, 2022 by the USB promotion group 'USB Promoter Group' consisting of Apple and Intel, and it is clear that it supports data transfer at 80 Gbps. It was. In addition, it was announced that ``the existing 40 Gbps compatible cable will support transfer at 80 Gbps as it is'', and attention was focused on being able to double the transfer speed without replacing the cable.

Part of the specification of 'USB4 Version 2.0' is revealed, realizing data transfer speed of up to 80 Gbps with conventional 40 Gbps compatible cable - GIGAZINE

The USB-IF announced further detailed specifications for USB4 Version 2.0 on October 18, 2022. In the announcement, the USB-IF said, 'As an option for certain applications, such as driving very high-performance USB4-based displays, the USB Type-C signal interface can be configured asymmetrically to achieve up to 120 Gbps in one direction. It is possible to maintain 40 Gbps in the other direction,' he said, revealing that USB4 Version 2.0 will enable data transfer at a maximum of 120 Gbps.

In addition, Brad Sanders, chairman of the USB-IF, told Ars Technica, an overseas media company, ``When the product is connected to a USB port, data transfer at 120 Gbps is possible due to the USB4 detection process managed by the system software. It will be determined whether or not.Transfer at 80 Gbps will be attempted first, and then transfer will be at 120 Gbps, ”the details are revealed . In addition, 120 Gbps transfer supports both transmission and reception, but Mr. Sanders says that 120 Gbps transfer will be used for `` data transmission from the computer to the high-performance display ''.

In addition to announcing transfer speeds, the USB-IF also announced a new USB4 logo. Products that conform to the USB standard have differences in transfer speed and power that can be supplied. A logo was announced to briefly indicate the The logo announced this time indicates that it supports transfer at 80Gbps and that it supports power supply at 240W. A total of 4 types of logos to be described have been announced.