Remote Work & Learning
Interactive Display | Signage
Regarding the lack of a 4K option in Mac OS via USB-C or DisplayPort, the reason may be that the Mac needs 4-lane bandwidth Main Link to reach 4K resolution on external monitors. Otherwise, a no 4K option issue may occur if DisplayPort/USB-C provides only 2-lane bandwidth. Thus, we suggest you follow these steps as a workaround.
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