Step-by-step Guide: How to Use a Second Laptop as a Monitor

Using your second laptop as a monitor is a smart way to expand your workspace, enhance productivity, or simply make multitasking easier. Whether you're setting up for work or gaming, this guide walks you through everything you need to know about how to use a laptop as a monitor—from the equipment required to a simple step-by-step setup process. We'll also tackle common challenges and provide practical troubleshooting tips to ensure a smooth experience.

Preparations for Using Another Laptop as a Second Monitor (via Cables)

Let’s first address the common question before getting into the exact steps: "Can I use my laptop as a monitor?" Yes, with the right equipment, it's possible. Here’s what you need to have ready to connect the two laptops via cables: 

Video Capture Device

A video capture device is essential to use another laptop as a monitor. This device bridges the primary laptop and the second one, allowing you to transmit video signals from the source laptop to the display.

Various video capture devices are available on the market - opt for one with HDMI compatibility to ensure it works with most laptops. For the best performance, select a low-latency device to prevent visual lag and choose a model that supports the resolution you need for clear visuals.

HDMI Cables

You will surely need an HDMI cable to connect your primary laptop to the video capture device. HDMI cables come in different lengths/types, so be sure to choose the one that suits your requirements best. High-speed HDMI cables are recommended to achieve optimal video quality and minimize latency issues.

To use a laptop as the second monitor with HDMI, ensure that your primary laptop has an HDMI output port for connecting to the video capture device. For the second laptop, an HDMI input port is needed, so it can receive video signals from the capture device.

HDMI Adapters if Needed

In some cases, your laptops may not have the necessary HDMI ports for direct cable connection. In this situation, HDMI adapters become critical for connecting the primary laptop and the video capture device. There are various types of adapters available, such as DisplayPort to HDMI and USB to HDMI converters.

You must identify the available ports on both laptops and choose the appropriate adapters according to the port types and connectivity options. These adapters will help you establish a seamless connection, allowing you to use the laptop as a second screen effectively.

If you are currently searching for HDMI adapters, we have a wide selection available for you, just like this amazing Anker 518 USB-C Adapter (8K HDMI). Experience crystal-clear visuals with resolutions up to 8K@60Hz or 4K@144Hz using this high-definition adapter and easily transforms your laptop’s USB-C port into an HDMI connection. Plus, its plug-and-play functionality ensures a smooth connection with TVs, monitors, and projectors.

Lastly, don’t forget to check if both laptops are running compatible operating systems, such as Windows 10 or Windows 11. These versions offer smoother support for features like Project to This PC and Miracast, making the setup process much easier and more efficient.

Steps to Use Another Laptop as a 2^nd Monitor

Easily extend your digital workspace by following these simple steps to use a laptop as a second screen:

Check Compatibility and Requirements

Before starting the process to connect two laptops together and use one as a monitor, it's crucial first to verify that your laptop is capable of driving a secondary display. Ensure it has the necessary connection ports (HDMI, VGA or DisplayPort) and that the secondary laptop supports video input - this is less common but can be achieved with specific software. Also, check the operating system requirements. Some methods will only work on certain versions of Windows or MacOS systems.

Connect Cables or Adapters to the Video Capture Device

If you're using a hardware solution like a video capture card, the next step includes connecting the necessary cables between the laptops and the capture device. This may require using adapters to match the available ports on your laptops and capture device. For instance, you may need an HDMI to USB adapter if your capture device has a USB interface and your laptop only has an HDMI output. Make sure that all connections are secure.

Connect the Video Capture Device to the Laptop

The video capture device should now be connected to the primary laptop, the one you want to display on the secondary laptop. Make sure that the device is connected correctly. Most devices will have a light or notification showing that they're properly connected and receiving a signal. You should then install any necessary drivers for the capture device, these can typically be found on the manufacturer's website. Once installed, you’re all set to connect the laptop to laptop monitor and extend your display.

Optimize the Monitor Performance

Finally, you can optimize your settings for the best visual experience. Adjust the resolution and display settings to match your secondary laptop's screen in your system settings or graphics control panel. This typically includes display size, orientation, and refresh rate. If you're using software, optimize settings such as encoding quality based on the performance of your laptop and network speed. Lastly, always make sure your secondary laptop is plugged into a power source to avoid any unexpected interruptions.

Common Issues during the Connection Procedure

During the connection procedure of using a laptop screen as a second monitor, whether it's connecting devices, networks, or services, several common issues can arise. Here are some of the most frequent problems and their potential solutions:

Incompatible Hardware: One of the laptops may lack the necessary ports or capabilities to function as an external monitor. Ensure that your laptops have compatible hardware before attempting to connect them.

Incorrect Cable or Adapter: Using the wrong type of cable or adapter can hinder or prevent the connection between the two laptops. Double-check that you're using the correct cables or adapters for the specific video input/output ports on both laptops.

Software Issues: In some cases, you may experience issues related to the software controlling the display on one or both laptops. Ensure that your video capture device's software is up-to-date and compatible with the operating systems and hardware on both laptops.

Poor Display Quality: If the video feed from the primary laptop is blurry, distorted, or lagging on the secondary laptop, adjust the video resolution and performance settings on both laptops and the video capture device to achieve the desired display quality.

Conclusion

In conclusion, mastering how to use a laptop as a monitor unlocks a world of possibilities, transforming your workspace into a productivity powerhouse. With the right preparation and a clear understanding of the steps, cables, and solutions to common issues, you'll soon wonder how you ever got by without the convenience and versatility of a dual-screen setup. Don't let your spare laptop gather dust—utilize its capabilities to create the ultimate multitasking environment for a game-changing experience.

FAQs

Can I extend the display to a third laptop using the same cable setup?

Extending the display to a third laptop with the same cable setup is more complex and isn't typically possible with just a standard USB-C cable. It would require more advanced hardware such as a docking station, or software solutions like remote desktop applications to share displays across three laptops.

What precautions should I take when disconnecting the cable from the laptops?

When disconnecting the cable from the laptops, ensure all data transfers have been completed to prevent data loss or corruption. Also, properly eject any hardware you're disconnecting in your laptop's operating system before physically disconnecting to avoid potential damage to your device. When disconnecting the USB-C cable, pull on the plug instead of the cord to prevent cable damage.

Can you use a laptop as a monitor for Xbox?

Yes, you can use a laptop as a monitor for Xbox by connecting the two with an HDMI cable or wirelessly through streaming. For the HDMI method, your laptop must have an HDMI input port, which is uncommon. Alternatively, you can stream your Xbox to the laptop using apps like Xbox Console Companion on Windows 10 or Xbox App on Windows 11, providing a wireless solution for playing on your laptop screen.

How can I use my laptop as a monitor only?

To use your laptop solely as a monitor, you can connect it wirelessly using built-in options like Miracast or the "Project to this PC" feature on Windows 10 and 11. These methods allow you to extend or mirror your display from another device to the laptop screen without using external cables. If you're using a Mac, you can use the "AirPlay" feature to share your screen.