I have two MacBooks. can i use the second one as an additional monitor with HDMI cable
I have two MacBooks. can i use the second one as an additional monitor with HDMI cable?
MacBook Pro 13″, macOS 12.1
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No, and No.
MacBook Pro is a notebook computer, not a display. It has no Video inputs of any description. Its HDMI is an OUTPUT, ONLY.
You can use Screen Sharing to show the screen of one computer in a window on the other. The data are sent across your Home Network {Wi-Fi, Ethernet, mixed}.