The 2020 M1 MacBook Pro 13 doesn't have an HDMI port but has either two or four Thunderbolt 3 / USB-C ports. You can connect just one external display using either a Thunderbolt 3 or USB-C cable. Again you can use an adapter or a dock if you have a monitor that doesn't support this connection type.
The problem is that your Mac will go to sleep when you close the lid if it's not plugged in and connected to an external display. You could set never go to sleep in the System Preferences. Go to Energy Saver > and select 'Prevent your Mac from automatically sleeping when the display is off'.
If you're using a Mac with M1 Pro: You can connect up to two external displays to your Mac using the Thunderbolt 4 (USB-C) and HDMI ports.
The Plugable 4K Docking Station plugs into your M1/M2 Mac Thunderbolt port via a USB-C cable. You can then connect one external monitor to the HDMI port in the docking station and then up to two more monitors to the DisplayPort ports on the Plugable docking station.
HDMI is the most common connector you'll find on the back of a TV. As we noted above, there are a few Macs ship with an HDMI port in which case you just need an HDMI to HDMI cable to connect your display to your Mac. If your Mac doesn't have an HDMI port then you just need an adapter.
Use an adapter to connect your Chromebook to a monitor (If you're not sure which ports to use, check the instructions included with your Chromebook.) Use these two ports to find the correct adapter (ex. DisplayPort to HDMI). Plug the adapter into the monitor, then into your Chromebook.
You can even set your MacBook to use only the external monitor.
0:532:47Along with one Thunderbolt 2 HDMI video adapter cable I know this can all sound a bit intimidating.MoreAlong with one Thunderbolt 2 HDMI video adapter cable I know this can all sound a bit intimidating. And confusing if you're not familiar with all these terms. But I'll have all of these products
No. Using an external monitor or leaving the computer plugged in will not damage the computer or the battery. Leaving the computer plugged in reduces the rate of accumulation of battery cycles.
and the HDMI 2.0 port both support video output, so you can connect an external display, a projector, or an HDTV. For Mac mini with M1 chip, you can connect one external display up to 6K using a Thunderbolt 3 (USB-C) port, and one external display up to 4K using the HDMI 2.0 port.
USB-C to HDMI adapter or a USB-C Digital AV Multiport adapter. If your iMac has an HDMI port, use an HDMI cable for a direct connection. Adjust and arrange displays.
Connect an HDMI display or HDTV: Plug a cable from your HDMI display or HDTV directly into the HDMI port on your 14-inch or 16-inch MacBook Pro. Use a USB-C Digital AV Multiport Adapter to connect the HDMI display or HDTV to a Thunderbolt / USB 4 port on your 13-inch MacBook Pro13-inch MacBook ProApple 60W MagSafe 2 Power Adapter (MacBook Pro with 13-inch Retina display).
After investigating a bit, I found out that the correlation is extremely strong with having it plugged in to an external monitor with the Macbook Pro monitor also active. If I unplug the laptop, or use only the external monitor (i.e. Mac in a 'clamshell' mode), the heating stops within a minute.