There are a few ways to use your iPad as a second monitor on any computer, including: Using third-party software: There are several third-party apps available, such as Duet Display, Air Display, and iDisplay, that allow you to use your iPad as a second monitor. These apps work by creating a connection between your iPad and computer via a lightning or USB cable. Using Apple’s built-in feature: If you have a Mac running macOS Catalina or later, and an iPad with iPadOS 13 or later, you can use the built-in feature “Sidecar” to connect your iPad as a second monitor. You can use your iPad as a second display by connecting it to your Mac using a lightning or USB cable, or wirelessly using Bluetooth. Using Remote Desktop: You can use Remote Desktop software such as Microsoft Remote Desktop, Chrome Remote Desktop or TeamViewer to connect your computer and iPad, so you can control your computer from your iPad and use it as a second monitor. It’s important to note that the method you choose may depend on the type of computer you have, and some methods may work better than others. Also, in some cases, you may need to have a fast and stable internet connection to use your iPad as a second monitor wirelessly.