Choosing a dummy plug: use a virtual display without a monitor

Door TB Creations

July 7, 2026 8 min leestijd

Dummy plug kiezen: virtueel scherm gebruiken zonder monitor - Ibley

Do you want to use a computer, mini PC or server without a physical monitor, but still need the system to think a display is connected? A dummy plug can be a practical solution. A dummy plug simulates a connected monitor, so your device recognizes a virtual display.

In our collection of dummy plugs, you’ll find display emulators for a range of uses. These include HDMI dummy plugs, DisplayPort dummy plugs, remote desktop, streaming, headless PCs and systems where you want to activate an extra virtual screen.

What is a dummy plug?

A dummy plug is a small adapter that you insert into a video output on your computer, server, mini PC or graphics card. This signals to the computer that a monitor is connected, even though no physical screen is actually needed.

Dummy plugs are also known as display emulators, monitor emulators, HDMI dummy plugs, DisplayPort dummy plugs or virtual display adapters. The name you’ll see mainly depends on the connection and application.

What do you use a dummy plug for?

A dummy plug is especially useful when you want to use a device remotely. Without a connected screen, a computer may not display the correct resolution, may not create an active desktop, or may revert to limited display settings.

For example, you can use a dummy plug for:

remote desktop or working remotely;
a headless PC, mini PC or server without a monitor;
streaming or recording setups;
systems that require an active graphics output;
activating a virtual second screen;
maintaining a fixed resolution without a physical monitor.

Do you work with computer and laptop accessories more broadly? Then also browse our collection of computer and laptop accessories. You’ll find other useful tools for workstations, peripherals and technical setups.

What does headless use mean?

Headless use means running a computer or server without a connected monitor, keyboard or mouse. The device might be located in a utility cupboard, server cabinet, office or behind a TV stand, but controlled remotely.

In this kind of setup, a dummy plug can help provide a usable virtual screen. This often makes it easier to work via remote desktop, management programs or other software.

Dummy plug for remote desktop

With remote desktop, you generally want a normal resolution and a stable desktop. Without a connected monitor, your computer may use a low resolution or certain graphics functions may not be available properly.

A dummy plug can solve this by simulating a screen. The system then recognizes a display, which can make it easier to work with programs such as Remote Desktop, TeamViewer, RealVNC or other remote software.

Do you use remote desktop with adapters, display cables or other connections? Our adapters and converters may also be relevant, for example if you need a different video connection from the one your device offers as standard.

Dummy plug for streaming and recording

When streaming or recording, you may want a computer to keep recognizing an active display even when no monitor is connected. This can be useful with a second PC, compact streaming PC, capture setup or system that’s kept out of sight.

A dummy plug can help maintain the desired resolution in this situation. This keeps your setup tidy, and you don’t always need to leave a physical monitor connected.

Dummy plug for a mini PC or server

Mini PCs and servers are often used without a dedicated monitor. They might be used as a media PC, home server, remote workstation or compact system for specific software.

A dummy plug can be a simple way to keep display settings available. Do you also use lots of small technical accessories or work with electronic components? Then browse our component handling accessories.

HDMI dummy plug

You insert an HDMI dummy plug into an HDMI port. HDMI is a widely used video connection on desktops, laptops, mini PCs, graphics cards, TVs and monitors.

Our collection includes HDMI dummy plugs in several versions, such as the Ibley HDMI Dummy Plug Gold and the Ibley HDMI Dummy Plug Grey. These product examples show that the category is mainly about compact display emulators for HDMI outputs.

Do you want to extend HDMI cables or connect two HDMI cables instead? Then you don’t need a dummy plug, but an HDMI coupler. A dummy plug simulates a screen; an HDMI coupler connects cables.

DisplayPort dummy plug

You can use a DisplayPort dummy plug with devices that have a DisplayPort output. DisplayPort is commonly found on desktops, business PCs, graphics cards and monitor setups.

For DisplayPort, you could consider the Ibley DisplayPort Dummy Plug Grey or the Ibley DisplayPort Dummy Plug Black. Always choose a connector that matches your device.

HDMI or DisplayPort: which dummy plug do you need?

Choose the right dummy plug based on the video output on your device. If your computer or graphics card has HDMI, choose an HDMI dummy plug. If your device has DisplayPort, choose a DisplayPort dummy plug.

HDMI and DisplayPort serve similar functions, but their connectors are physically different. They therefore won’t fit into each other’s ports without a separate adapter. If your device has a different connection, browse our collection of adapters and converters to see whether there’s a suitable solution.

Resolution: Full HD, 4K or higher

Dummy plugs can support different resolutions. Full HD is often sufficient for basic remote work. For more screen space, streaming or graphics applications, 4K may be more suitable.

Keep in mind that the dummy plug isn’t the only factor. Your computer, graphics card, operating system and remote desktop software must also support the desired resolution.

Refresh rate and stable display

Refresh rate can also be important in addition to resolution. It’s often less critical for standard remote desktop use, but a higher refresh rate can be preferable for video, streaming or graphics applications.

So check not only whether you need HDMI or DisplayPort, but also which resolution and Hz value are right for your setup.

Dummy plug for a virtual second screen

Sometimes you want to do more than simulate a monitor: you also want an extra virtual screen to be available. This can be useful when software expects multiple screens or when you want more screen space while working remotely.

How well this works depends on your operating system, graphics card and software. Check in advance whether your application supports multiple screens.

Installing a dummy plug

A dummy plug is usually easy to use. Insert it into the correct HDMI or DisplayPort output and the system will recognize a display. You can then adjust the resolution, scaling and screen layout in the display settings.

Using remote desktop? You may need to restart the connection after inserting the dummy plug. This allows the software to recognize the virtual screen correctly.

Does a dummy plug work with every computer?

A dummy plug only works if the connection and system support the function. An HDMI dummy plug requires an HDMI output. A DisplayPort dummy plug requires a DisplayPort output.

Settings in Windows, macOS, Linux, remote desktop software and graphics drivers can also affect how the virtual screen is recognized.

Dummy plug or real monitor?

A dummy plug is useful when you don’t need a physical monitor but still want the system to recognize a screen. A real monitor is a better choice when you work on the device locally or want to see the image directly.

So choose a dummy plug for headless use, remote management or virtual display applications. Choose a monitor if you regularly operate the device directly.

Dummy plug or HDMI coupler?

A dummy plug and an HDMI coupler may both look like small video accessories, but they serve different purposes. A dummy plug simulates a monitor. An HDMI coupler connects two HDMI cables.

Want to activate a virtual screen? Browse the dummy plugs. Want to extend an HDMI cable? Browse the HDMI couplers.

Dummy plug or adapter?

You use an adapter to connect or convert connections, for example from USB-C to HDMI or from DisplayPort to HDMI. A dummy plug, on the other hand, is designed to simulate a monitor.

Using a laptop, tablet or PC without the right video output? You may need a product from our adapters and converters collection. Want the system to recognize a screen without a real monitor? A dummy plug is a better fit.

Dummy plugs as electronic accessories

Dummy plugs fall under the broader category of electronic accessories. This category is useful if you’re also looking for other solutions for connections, conversion, video, data or storage.

Do you also work with memory cards or transfer files in addition to virtual screens? Browse our card readers. If you use HDMI, USB-C or DisplayPort at your workstation, adapters and converters and HDMI couplers are logical next steps.

What should you consider when choosing?

Choose the right dummy plug based on the connection, resolution and intended use. Don’t choose based only on color or size; compatibility with your device is the most important factor.

When choosing, consider:

whether you need HDMI or DisplayPort;
which resolution you want to use, such as Full HD or 4K;
whether you’ll use the dummy plug for remote desktop, streaming or headless use;
whether your computer or graphics card supports the desired resolution;
whether your software recognizes a virtual screen correctly;
whether you want to use one or multiple virtual screens;
whether the devices or accessories shown are included or not.

Which dummy plug is right for you?

Do you use a computer, server, mini PC or graphics card without a physical monitor? Browse our dummy plugs. Choose the connector that matches your device: HDMI or DisplayPort.

Want to expand your setup with other video or computer accessories? Also browse our HDMI couplers, adapters and converters, electronic accessories and computer and laptop accessories.

Not sure which dummy plug is right for your setup? Feel free to contact us and we’ll be happy to help.

Frequently asked questions about dummy plugs

What is a dummy plug?

A dummy plug is a small display emulator that simulates a connected monitor on your computer or graphics card.

What do you use a dummy plug for?

You can use a dummy plug for remote desktop, headless PCs, streaming, servers, mining rigs or activating a virtual screen.

What is the difference between an HDMI dummy plug and a DisplayPort dummy plug?

An HDMI dummy plug fits into an HDMI port. A DisplayPort dummy plug fits into a DisplayPort port. Choose the connector that matches your device.

Can a dummy plug replace a real monitor?

A dummy plug simulates a monitor, but doesn’t display an image itself. You still need a real monitor to work locally.

What resolution do I need?

Full HD is often sufficient for basic remote work. 4K can be useful for more screen space, streaming or specific applications, provided your device and software support it.