8K HDMI v2.1 / 4K HDMI v2.0 Cables. Optional: 4K HDMI 2.0 Cable, backwards 1080P. Optional: 8K HDMI 2.1 Cable, backwards 1080P, 4K. 4X clear compared with 1080p. HDMI 2.1 technology is backwards compatible with HDMI 2.0b/2.0a/2.0/1.4/1.3/1.2/1.1.
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