We have some notes in the docs about dealing with a 4k resolution, but the canonical source is always the Raspberry Pi docs at https://www.raspberrypi.com/documentation/computers/configuration.html#hdmi-configuration.

EDIT: I'll add some notes about the 2nd port and a link to the video mode table listing.

Seth from Street fighter IV..I hate him! Such a cheap guy without any originality but with all the best moves of many characters.

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