Use a laptop as a second screen for your laptop
Get a video capture card: a) https://amzn.to/3IZQGX4, b) https://amzn.to/3rYawyP, or c) https://amzn.to/46Ni4Da (affiliate links)
A second screen is great for PowerPoint Presenter View or for being more efficient at getting work done. If you don’t have a monitor to plug into your laptop as a second screen but you have an open HDMI port and a second laptop, you can use a video capture device that costs around $25 to use the second laptop as a second screen for your primary laptop.
This works between any combination of Windows or Mac laptops. The laptops don’t need to be recent ones, even older ones will work just fine (I use a 7-year-old Surface 3 in the video to prove it). In the video I show a Windows laptop as a second screen for a Windows laptop, a Mac laptop as a second screen for a Windows laptop, and a Windows laptop as a second screen for a Mac laptop.
If you want to use a Windows app to see the display full screen instead of the Windows Camera app, use the Webcam Viewer app I demonstrate in this video: • Use HDMI for laptop as second screen ...
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