How to Use a Second Laptop as a Monitor

If you have an extra laptop lying around, you can put it to good use as a second monitor for your primary computer. This can come in handy if you’re working on a project that requires a lot of screen real estate, or if you simply want to have more control over your workspace. Here’s how to set it up.

First, you’ll need to gather a few supplies. In addition to the extra laptop, you’ll need an HDMI cable, a mini DisplayPort-to-DisplayPort cable, or a Thunderbolt 3 cable. You’ll also need a way to prop up the second laptop so that it’s at a comfortable viewing angle. A stack of books or a laptop stand will work fine.

Once you have everything you need, power on both laptops and position them side by side. If you’re using an HDMI cable, plug one end into the HDMI port on your primary laptop and the other end into the HDMI port on the second laptop. If you’re using a mini DisplayPort-to-DisplayPort cable, plug one end into the mini DisplayPort on your primary laptop and the other end into the DisplayPort on the second laptop. If you’re using a Thunderbolt 3 cable, plug one end into the Thunderbolt 3 port on your primary laptop and the other end into the Thunderbolt 3 port on the second laptop.

Once the cable is plugged in, you should see your primary laptop’s display appear on the second laptop. If it doesn’t, open the Display Settings menu on your primary laptop and make sure that the second laptop is selected as the primary display. You can now adjust the resolution and other settings on the second laptop to suit your needs.

If you want to use the second laptop as a touchpad, you can do so by downloading and installing a program like Touchpad Pal. This will allow you to control your primary laptop’s cursor with the second laptop’s touchpad. You can also use the second laptop’s keyboard to type on your primary laptop, which can come in handy if your primary laptop’s keyboard is broken or if you simply want a more spacious keyboard to work with.

When you’re finished using the second laptop as a monitor, you can unplug the cable and put the second laptop away. If you want to use it as a touchpad, you can leave the Touchpad Pal program running in the background. Otherwise, you can close the program and free up some memory on your primary laptop.

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