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zoran

macrumors 601
Original poster
Jun 30, 2005
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When I am connecting my MacBook Pro to an external display, can I just be using my external display as the only viewing display, or do I have to use both displays together (MacBook and ext display)?
 

xraydoc

Contributor
Oct 9, 2005
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192.168.1.1
If you connect an external keyboard and pointing device, you can keep the laptop's lid closed. If the laptop is open, it will use the laptop's display as well as the external display. Some people like to use the laptop's keyboard and trackpad and treat the laptop's screen as a secondary display.
 
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xraydoc

Contributor
Oct 9, 2005
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Are there any downsides when doing this?
None. I have a 14" M1P MacBook Pro and it sits on a little shelf, connected to a Thunderbolt docking station, two external monitors, keyboard, mouse, external SSD, CD/DVD burner and ethernet. Most of the time it pretends to be an M1 Pro Mac mini. Lid closed. No issues.

A few people might say that if you're maxing out the CPU and GPU to 100% for continuous extended periods of time, the heat created could potentially impact the built-in display with the lid closed (since some heat will rise though the keyboard). It's rare that someone's workflow would do this, but something to consider. My machine barely rises above body temperature, so I have no concerns.
 
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zoran

macrumors 601
Original poster
Jun 30, 2005
4,799
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None. I have a 14" M1P MacBook Pro and it sits on a little shelf,
What kind of a little shelf is that? Are you talking about those metallic bases that are for placing laptops?
 

xraydoc

Contributor
Oct 9, 2005
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What kind of a little shelf is that? Are you talking about those metallic bases that are for placing laptops?
I use this. Laptop sits in the little right-hand side bottom shelf.
 
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zoran

macrumors 601
Original poster
Jun 30, 2005
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Maybe when placing the laptop vertically the heat will come out better?
 

TinyMito

macrumors 6502a
Nov 1, 2021
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1,225
I just want to add, if you are only connecting external with HDMI into the port. You need to plug your power in, and otherwise it will just sleep.

Would suggest a dock station if you prefer using a single USB-C cable - make sure it has power delivery.
 
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