HDMI Forum debuts mandatory certification of cables for HDMI 2.1 - FlatpanelsHD
Ultra high-speed HDMI™-kabel, gecertificeerd, conn.-connector, 8K, 1,0 m | Hama
Inakustik Star Ultra High Speed HDMI cable (HDMI 2.1)
Amazon.com: Monoprice 8K Certified Braided Ultra High Speed HDMI 2.1 Cable - 15 Feet - Black | 48Gbps, Compatible With Sony PS 5, PS 5 Digital Edition, Xbox Series X, and Xbox Series S : Everything Else