What‘s the meaning of 4K Output ?
HDMI 1.4:
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4,096x2,160-pixel 24fps 3,820x2,160 up to 30fps,3840x2160 pixels high @ 24Hz 25Hz | 30Hz
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4096x2160 pixels high @ 24Hz H.264 only,
HDMI 2.0:
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4,096x2,160-pixel 60fps 3,820x2,160 up to 60fps,
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3840x2160 pixels high @24 Hz 30 Hz 50 Hz 60 Hz
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4096x2160 pixels high @ @24 Hz 30 Hz 50 Hz 60 Hz
HEVC H.265 supported
Amlogic M802 cpu need debugging to be compatiable.
Available in the end of May . No need change HDMI cable, backwards-compatiable with HDMI 1.3 /1.4 cable