Can You Use an HDMI Splitter for Dual Monitors?

An HDMI splitter is an essential tool for anyone wanting to use two monitors at once. It allows you to duplicate the same video and audio signals from one source to two, or more, output devices. This means that you can watch the same video or audio on two monitors, TVs, or any other type of display, without having to purchase additional cabling. The HDMI splitter is an important device for those who need to extend their displays, either for gaming or work, and is becoming more and more common in homes and offices. 

Can You Use an HDMI Splitter for Dual Monitors?

Yes, it is possible to use an HDMI splitter for dual monitors. However, depending on the type of splitter you have and the type of monitors you are using, you may need to use different adapters or converters. Additionally, your graphics card may need to be able to support multiple monitors in order for it to work properly.

Different Types of HDMI Splitters

Powered Splitter

A powered splitter is a device that uses an external power source, typically a battery, to boost the signal strength of an incoming signal. They have amplifiers built in to boost the signal strength on each port. This makes them ideal for situations where there are long runs of coaxial cable and where the signal needs to reach multiple locations.

Passive Splitter

Passive splitters work without power and do not have amplifiers built in. They simply divide the signal into multiple ports without increasing the signal strength. They are adequate for situations where the signal does not need to travel long distances.

Advantages of HDMI Splitter for Dual Monitors

1. Enhanced Experience

HDMI splitters enable individuals to work on different tasks simultaneously with two monitors. This allows both individuals to work independently, which can lead to improved efficiency. Furthermore, dual monitors can also be used to create a more immersive gaming experience.

2. Improved Performance

With HDMI splitters, data can be split from one source and sent to two different displays. This means that the picture and sound quality are maintained and improved since the signal is not weakened by being sent to multiple displays.

3. Cost Saving

In addition to saving money on additional cables, HDMI splitters can save you from buying two individual monitors to display the same image. The splitter also eliminates the need for complicated installation.

Best HDMI Splitters For Connecting Multiple Monitors

1. OREI HDMI Splitter (2-Port)

2. ViewHD HDMI Splitter (2-Port)

3. StarTech HDMI Splitter (4-Port)

4. Fosmon HDMI Splitter (3-Port)

5. OREI HDMI Splitter (8-Port)

Considerations When Connecting an HDMI Splitter With Dual Monitor

1. HDCP/EDID Support

High-bandwidth Digital Content Protection (HDCP) is a type of digital rights management developed by Intel Corporation to prevent the unauthorized use and distribution of digital audio and video content. An HDMI splitter must support HDCP in order to ensure that protected content is not illegally copied. 

The Extended Display Identification Data (EDID) is a data structure provided by a display device to describe its capabilities to a video source, such as preferred resolutions and timings. An HDMI splitter must support EDID in order to correctly display content on the connected devices. 

2. HDMI version compatibility

It is important to ensure that the HDMI splitter is compatible with the HDMI version of the connected devices. If the splitter is not compatible with the version of HDMI of the connected device, it will not be able to detect the device or display any content.

3. HDCP Bypass (FallBack Mode)

An HDMI splitter must have a built-in HDCP bypass feature, which will enable it to bypass the HDCP encryption of a connected device and still display the content. This is also known as the fallback mode, which is used when the connected device does not support HDCP.

4. Resolution Support

The resolution support of the HDMI splitter must be compatible with the monitors connected to it in order to ensure that the system will be able to properly display content at the highest resolution possible.

5. Number of HDMI outputs

The number of HDMI outputs on the HDMI splitter will depend on how many displays you want to connect. Some splitters support up to 8 outputs. 

6. Audio Compatibility

Most HDMI splitters support two-channel audio, but some may also support multi-channel audio. It is important to ensure that the splitter supports the audio format of the connected devices. For example, if the source is Dolby Digital and the display is PCM, the splitter must be able to decode and transcode the audio format.

How to Setup an HDMI Splitter?

1. Check the type of HDMI splitter you have. There are various kinds, including powered and non-powered splitters. Determine the type you have and follow the instructions for setup.

2. Connect the HDMI cables from your source device (like a Blu-ray player) to the input of the splitter.

3. Connect the HDMI cables from your display device (like a TV) to the output of the splitter.

4. Plug the power cable of the splitter into a power outlet.

5. Turn on the source device and the display device.

6. Check that the source device is sending a signal to the splitter.

7. Set the splitter to the desired mode (for example, mirroring or extending).

8. Check that the signal is being sent to the display device.

9. Adjust the settings on the display device for optimal display (for example, resolution).

10. Enjoy your HDMI splitter setup!

Troubleshooting an HDMI Splitter for Dual Monitors 

Check Your Connections

First, check all connections and make sure the HDMI splitter is properly plugged into the appropriate ports of your two monitors and the device you are trying to display. Make sure all connections are secure and tight. 

Test Your Device Settings

After ensuring the connections are correct, check the settings of the device you are trying to display. Make sure the resolution and refresh rate are set correctly for the monitors you are using. If the settings are incorrect, make sure to adjust them to the appropriate values.


Do I need an HDMI splitter or switch for dual monitors?

It depends on what you are trying to do. If you want to connect two monitors to one device, such as a laptop or computer, then an HDMI splitter is the best option as it will allow you to split the signal and have both monitors display the same image. However, if you have multiple devices that you want to connect to two monitors, then an HDMI switch is the better choice as it will allow you to switch between the different devices.

Does an HDMI splitter slow down the computer?

No, an HDMI splitter will not slow down a computer. It simply takes a single HDMI signal and divides it into two separate signals so they can be used on two different screens.

Can I use an HDMI splitter to extend not duplicate my laptop screen across two monitors?

No, an HDMI splitter will duplicate your laptop screen across two monitors. If you want to extend your laptop screen across two monitors, you will need to use an HDMI switch or a USB graphics adapter.