https://www.club-3d.com/shop/cac-1087-1128 (3m cable version)
DP 1.4 → HDMI 2.1. Apparently they're no longer being manufactured (?? - not sure that's correct), so get one while it's still possible...
[Ed.: accidentally linked another adapter that is the other direction. Added 3m & direct manufacturer links.]
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https://www.club-3d.com/shop/cac-1087-1128 (3m cable version)
DP 1.4 → HDMI 2.1. Apparently they're no longer being manufactured (?? - not sure that's correct), so get one while it's still possible...
[Ed.: accidentally linked another adapter that is the other direction. Added 3m & direct manufacturer links.]