How to Use an All in One PC as a Monitor? 5 Easy Ways

All-in-one computers perform identically to traditional desktop computers but are smaller and take up less room. Nevertheless, some people may remain interested and wish to join or use the display of their all-in-one computer as a secondary monitor.

Their curiosity may stem from the fact that their all-in-one computer is no longer in use, or they wish to utilize the display of their all-in-one computer in any way possible. This article will assist you in using an All-in-One PC as a Monitor.

If your all-in-one computer includes a display-in port, all you have to do is connect a display cable to the “In Port” on the AIO, and “Out Port”, on the primary computer, you wish to use. If your all-in-one computer lacks a display-in port, you can circumvent this by using a display port adapter or remote desktop software.

What Are All-in-one Computers?

All-in-one computers typically have touch displays, pads, robust memory, and random-access memory. In addition, they have a lower profile, are less cluttered, and have a more sleek appearance than typical desktop computers.

AIO computers, or all-in-one PCs, are the most appropriate technology for every type of business. These individuals are incredibly efficient at their jobs. They are thin and small in appearance.

Almost all AIO machines include a large, high-resolution monitor. The central part of an AIO device is its display, as all of the accessories found in a desktop PC’s cabinet are squeezed into the monitor of an AIO system.

Is It Possible to Use The All-In-One Computer as a Monitor?

How to Use All in One PC as Monitor for PS4

The solution is dependent on the hardware configuration of your AIO machine. A computer must have a display ‘IN Port’ to be used as a monitor. Unfortunately, the majority of all-in-one computers feature display OUT connections. As a result, they cannot be used as monitors.

Specific individuals recommend employing software to replicate the content of the other monitor to your all-in-one PC. While this method may work in some cases, the display is frequently inadequate. Finally, this negates the purpose of utilizing your computer as a monitor, to begin with.

Numerous all-in-one laptops are equipped solely with HDMI connectors. As a result, you can connect an additional monitor to your all-in-one computers using an HDMI connection or a USB Display Adapter if the secondary monitor does not support HDMI.

USB adapters connect to a USB port and enable one or more external displays. As a result, they can operate desktop applications and play full-screen videos despite their lack of 3D capabilities.

By Using HDMI Cable

  • Insert an HDMI cable into the HDMI-in Port on your all-in-one to utilize it. The opposite end of the wire is plugged into the primary monitor’s HDMI-out Port. Once connected (and provided both computers are turned on and operating), the central computer will stream video to the all-in-one device automatically.
  • After they are linked, you may need to adjust the display settings on the primary computer to your liking. On Windows, you may access the display settings by typing “display” into the search box. It enables you to customize the font size and other characteristics. You can access Additional display settings by clicking on “additional display settings” in the window’s upper right corner.
  • It is where you may arrange your various screens, customize their screen resolutions, and experiment with other possibilities. The critical point here is that once the connection is established and operating, you can manage the display for the all-in-one from the setting on the main computer.
  • If your All-In-One does not even have an HDMI-In connector, it may have a DisplayPort or USB-C input. Occasionally, the source button is situated on the computer’s bottom or back. Your All-In-One cannot be utilized as an external or secondary monitor without an input port.

By Using a USB Video Adapter

  • HDMI, VGA, and DisplayPort connections are all supported by a USB Video Adapter. 
  • After that, connect your device to the USB Video Adapter using the appropriate wire and inputs. 
  • You will use a USB port to connect the USB Video Adapter to the computer.

By Disassembly of an All-in-one Personal Computer Display

All-in-one computers have their screens attached to the motherboards, which also houses the power supply and display. While utilizing it as a display on the monitor, you must unplug it from the computer’s motherboard.

It can be linked via display ports for display-in. Alternatively, you can power it directly from the PC’s motherboard, although this is not recommended as it will take more power. As a result, it is recommended to arrange voltages via the adaptor.

After disassembly, you’ll require a display board, similar to what we have in monitors, where we receive the built-in display choice. It would help if you soldered/clipped the display monitor strip from your all-in-one computer to that board to enable the display-in option for your all-in-one computer monitor.

However, for configuration and connectivity, you must be an expert and knowledgeable about all fundamental and critical variables such as the voltage required for the display, the specific display board, and so on.

By Using DisplayPort

DisplayPort is a more recent visual connection standard that is gradually supplanting HDMI. Plug the cable into the relevant DisplayPort connection points once you’ve located them.

If you’re unfamiliar with DisplayPort, here’s an illustration:

  • When they are joined, they will behave identically to the setup as for HDMI. 
  • You may control all video settings from the central computer if you’ve never used DisplayPort before.

By Using VGA Output 

Although VGA is an obsolete connection type, it is still used on some systems. Typically, it is blue.

Despite DVI, all VGA ports are compatible with one another. VGA has the disadvantage of not supporting high-definition connections. However, this may still work if your all-in-one has a VGA-in port.

When using a VGA connection, attach the cable to both devices and proceed. Adapters allow you to connect a VGA port on one computer to a DVI connector on another.

Advantages of All in One PC

  • Wireless networking is also one of the all-in-one computer’s potential characteristics. Most AIO PCs include built-in Wi-Fi and Bluetooth capabilities with a laptop PC.
  • AIO computers are incredibly lightweight due to their small size and lack of external devices. Thus, an all-in-one device can be conveniently moved from room to room or location to location. However, it lacks the portability of a laptop computer.
  • AIO computers are incredibly narrow in form, and due to their small size, they can be installed in even the most awkward business space. As science and technology develop, the size of an AIO computer’s monitor continues to shrink.
  • The majority of AIO systems include a touch screen. This feature is highly beneficial to users in various professional domains, and the price of an AIO with a touch screen is not prohibitively high compared to other models.
  • The all-in-one computer is the most energy-efficient model available. That is because all that is required to power an all-in-one computer is to feed electricity to the monitor, and the PC will switch on. Unlike desktop PCs, an AIO does not require multiple power supply points.
  • A web camera is easily accessible in an all-in-one computer, which is beneficial in the internet and video conferencing era. However, one must connect a web camera outside a desktop computer, which costs an additional penny.

Disadvantages of Using All in One PC

  • An all-in-one system seems to be more expensive than a standard desktop computer. By spending the same amount of money, one can easily configure a PC with a more significant configuration.
  • Due to the small and narrow design of an AIO, repairing it is pretty tough. Each time an individual requires assistance with his all-in-one computer, he requires an expert. The more updated AIOs become, the more expensive and intricate the repair process becomes.
  • When a user wishes to upgrade or replace a damaged component on an all-in-one computer, he will have challenges locating the ideal component. All-in-one desktop components are challenging to get on the market or in online retailers, and the components are marketed at a premium price.
  • The all-in-one computer longevity is a significant issue. Due to the complexity of upgrading an all-in-one PC and its limited to a specific location, an AIO cannot be utilized for more than three to five years.

Frequently Asked Question

Do Dell Computers Have an HDMI Port?

A Port/Connector has either holes or a slot corresponding to the plug or device connected to the Port on a Dell computer. HDMI (High-Definition Multimedia Interface): HDMI is a digital video standard that replaces the DVI-HDCP video standards.

Can You Use an All-in-one Computer as Just a Monitor?

If desired, you can connect an additional monitor to your All-in-one computer via the available HDMI port. Nevertheless, the All-in-one computer cannot be used as a monitor. It works similarly to the video ports on any video card in that they only function as Video OUT, not Video IN.

Does Asus All in One Have HDMI Input?

ASUS M241 features exclusive ASUS SonicMaster technology for superior audio quality. In addition, the ASUS M241 features an HDMI-in connector that enables you to connect video and audio from any device with an HDMI output, providing an incredible huge experience for your computer, mobile device, game console, or even set-top TV box!

Can I Use My Asus All-in-one Computer as a Monitor?

When the ASUS All-in-One PC is connected via HDMI, it could be used as a standard computer LCD monitor. This button allows you to reduce the brightness in HDMI System mode.


All-In-One Computers are viewed as user-friendly and straightforward to use, partly because of their large touch-screen interfaces and their ability to save desk space and have fewer wires.

If the HDMI, DisplayPort, or Thunderbolt connectors on your all-in-one PC are functional with the second monitor, you’re ready to go. Use an HDMI to VGA converter to connect to older monitors

Additionally, you can utilize an HDMI – DVI cable with a DVI display. Additionally, if your all-in-one PC includes a DisplayPort input, a DisplayPort to DVI or HDMI adapter is recommended.

Finally, you can use your AIO PC as a monitor by disassembling it. I hope this article will help you use an All in One Pc as a Monitor.

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