I am having trouble extending my display
I'm following directions, but there is no Arrangements tab under my Displays icon.
MacBook Air 13″, macOS 10.15
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If there isn’t an arrangement tab, then it doesn’t see the monitor.
You need to use the thunderbolt port. macOS doesn’t push video over USB.
You will need a thunderbolt to DVI, HDMI, DisplayPort, or VGA as appropriate for the monitor.
