DisplayPort 2.1 specification will be published, all existing DisplayPort 2.0 cables will support DisplayPort 2.1

On October 17, 2022, the Video Electronics Standards Association (VESA) , a standardization organization for video peripherals, released the specifications for 'DisplayPort 2.1'. The main purpose of 'DisplayPort 2.1' is to improve compatibility with USB4, and it is possible to use existing 'DisplayPort 2.0' compatible cables as they are.

VESA Releases DisplayPort 2.1 Specification - VESA - Interface Standards for The Display Industry
https://vesa.org/featured-articles/vesa-releases-displayport-2-1-specification/

DisplayPort is a video input/output interface that is used in many devices along with HDMI, and supports transmission of high-quality video such as 8K video and HDR video. In addition, since 'DisplayPort 1.3' whose specifications were released in 2014, it also supports connection with a USB Type-C connector, and several displays that can perform everything from power supply to video input/output with a single USB Type-C cable have appeared. doing.

According to VESA, 'DisplayPort 2.1' was formulated with the main purpose of improving the consistency between the DisplayPort standard and the USB standard. Specifically, new bandwidth management features have been added to DisplayPort, allowing it to coexist with other I/O traffic more efficiently than existing standards when tunneling DisplayPort over USB4.

VESA has started a DisplayPort certification program in February 2022 to solve the problem that ``even cables that support the same version of DisplayPort have different compatible transfer speeds''. According to VESA, cables that have been confirmed to support 'DisplayPort 2.0' in the certification program can continue to be used with 'DisplayPort 2.1'. Therefore, users who already have a 'DisplayPort 2.0' compatible cable do not need to purchase a new cable.

The communication bandwidth is attached to the cable to distinguish the version of DisplayPort that is difficult to understand - GIGAZINE

In addition, the 'DisplayPort 2.1' specification also includes cable length extension for high-speed transfer cables, and the 'DP80' compatible cable, which has been recognized to operate at a maximum of 80 Gbps in the above certification program, is 1 meter and a maximum of 40 Gbps. A 'DP40' compliant cable that is certified to work is required to support a cable length of 2 meters.