How come my monitor has no image when connecting to a Mac through USB-C?


Please make sure to connect your Mac and monitor with a BenQ USB-C cable or a USB-C cable which is certified by the USB-IF and features power delivery as well as full video, audio, and data transmission. Some USB-C cables for Mac are USB-C charge cables and do not support video. Also, please make sure the correct resolution and refresh rate are selected on your Mac and the monitor.

Applicable Models

EW2780U, EW3270U, EW3280U, EX2780Q, EX3203R, PD2705U, SW270C , SW271, SW271C , SW321C

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