Before buying a second monitor for your desktop, think about whether an ultrawide monitor setup might be a better alternative ...

On your old laptop, download the Spacedesk Viewer app. Launch the viewer, and it should automatically detect your primary PC on the network with its IP address listed. To set it as an extended display ...

Laptops are practical because you can take them with you. However, laptops have a relatively small screen. If you work on a mobile computer, it quickly becomes annoying to constantly switch programs.