HDMI® 2.1b Specification

HDMI® Specification HDMI 2.1b is the most recent update of the HDMI® specification and supports a range of higher video resolutions and refresh rates including 8K60 and 4K120, and resolutions up to 10K. Dynamic HDR formats are also supported, and bandwidth capability is increased up to 48Gbps.

Supporting the 48Gbps bandwidth is the new Ultra High Speed HDMI Cable. The cable ensures ultra high-bandwidth dependent features are delivered including uncompressed 8K video with HDR. It features exceptionally low EMI (electro-magnetic interference) which reduces interference with nearby wireless devices. The cable is backwards compatible and can be used with the existing installed base of HDMI devices.

To identify the cable, make sure the packaging displays the required Ultra High Speed HDMI Certification Label shown above. Please note the label includes the official Cable Name Logo printed on it. The name is also required to appear on the outer cable jacket itself. To verify the cable has been tested and certified in compliance with the HDMI 2.1b Specification, the label can be scanned by the HDMI Cable Certification app available on the Apple App Store, Google Play Store and other Android app stores.

New HDMI Cable Certification Labels

The HDMI Cable Certification Program supporting Ultra High Speed HDMI Cables is changing to a new generation (Gen 2) label. The original Gen 1 labels in the market will continue to be supported with the proprietary scanning app for the immediate future. Please note that consumers will be seeing two versions of the labels and they use different scanning apps. Please download the informational brochure for complete details here HDMI Certification Label Transition Public

From : https://www.hdmi.org/spec21sub/ultrahighspeedcable