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How to setup Dual Monitors with HDMI Splitter

How to setup Dual Monitors with HDMI Splitter

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An HDMI Splitter is often confused with an HDMI adapter. Many customer will purchase a HDMI splitter thinking its is an HDMI adapter. In this article we will explain to you the difference and get you on the right track

Many people use dual monitors for work, home, and other computer-related activities. Let’s just be honest, it’s hard to get multiple things done on just one monitor, That’s why in the early 2000s many corporations switched to using two monitors instead of just one.

With the drastic increase in applications over the past 20 years, using dual monitors is actually the most productive way to accomplish work. In this article, we will discuss how to set up dual monitors with an HDMI splitter.

Let’s gets some clarity on the subject of using an HDMI Splitter.

An HDMI Splitter is a device used to duplicate a picture. Take for instance, you want to two TV’s to run the same picture from your cable box. In that particular scenario, you will use an HDMI Splitter. Many people get this confused and think an HDMI Splitter is the same as an HDMI adapter. More often than not customers will waste time and money purchasing an HDMI splitter for their dual monitor setup only to figure out that it was not the right product.

An HDMI Adapter- This particular device is used to duplicate and extend your picture. The keyword here is extend. With an adapter you not only have the option to duplicate, but you can extend different monitors. This is what the masses are looking for. The Adapter will consist of 2 HDMI input ports( 1 for each monitor) on one end and either a USB-C or regular USB cable that plugs into your computer. Here is a popular on on Amazon.

HDMI SWITCH. This device is for when you want to hook up multiple devices to one HDMI port. This is a handy device to use if you don’t have many HDMI ports on your TV. Although similar to an HDMI extender, this device will switch between different HDMI inputs to play what you want. Take for instance, you want to hook up your PS5 and Xbox S at the same time, but you don’t have any more hdmi inputs on your TV.


The reason a person would need an HDMI adapter is if their laptop only has one HDMI input port and no RGB input, which is most laptops.

  1. Make sure your monitor has an Hdmi port on the back of it. Most modern day monitors will come with a least one HDMI port. If you don’t have an HDMI port, but you do have an RGB or DVI then you will have to
    get a converter.
  1. Purchase a good HDMI adapter. Here’s a good one
    from Amazon. If your laptop has a USB-C input, then here is a good HDMI to USB-C connector on Amazon. Also, make sure you purchase a few good HDMI cords.
  2. Connect one end of the first HDMI cord to the back of the first monitor and the other end into the adapter.
  3. Connect one end the second HDMI cord to the back of the second monitor and the other end into the adapter
  4. Connect the HDMI out on the adapter to your computer via USB or USB-C cable

Display Settings

Now that you have both monitors hooked up, its time to set up how you want your monitors to display. The most common display Setting is to extend your monitor from your laptop or desktop screen, but when us. my
dual monitors. many people will just use the two monitors instead of using their laptop also.

Below will go over different display viral ions.

Extended monitor with the laptop connected

• Main Display is your laptop a two markers will
be extended
Right hand click on you-computer desktop. click
display settings-

Extended Monitor with laptop closed

This is a common practice as well. Many people want to just use two external monitors with their laptops closed. Let’s go over how to get this done:

1. Physically connect two monitors to your laptop with an HDMI cable adapter.

2. Navigate to your display setting and choose how you want two appear
( duplicate or extend mode)

ON your laptop press the search button and type in sleep. After typing in sleep, settings will appear and you will see the power & sleep option. Click on the option additional power settings. Once in additional power settings, you will see an option that says “Choose what closing the does” Select ” Do nothing under on battery and plugged in.

Please Note: Some newer computers will automatically detect a monitor and will turn the monitor on automatically shortly after you close your laptops’ lid.

Duplicate monitors

This is usually the default setting when you first hook up an extra monitor. In this setting, both monitors will duplicate each other. As soon a your computer detects a new monitor it should automatically start in a duplicate mode. The new monitor will duplicate your current laptop.

If your monitor does not come on, make sure its connected properly and navigate to display settings – Multiple Displays and click duplicate monitors.

Setting up two monitors with a laptop

This is going to be the second most common style. If you have two dual monitors and want to set them up to extend your laptop or computer then you will need to purchase an HDMI adapter or a USB adapter. This will give you the capability to use two monitors with your laptop or computer. Now if you have multiple inputs on your laptop or computer that matches the connection in the back of your monitors such as an RGB and an HDMI input then you would not have to get an HDMI adapter, but this is rare.

For example: In the back monitor A, There is a RGB output and you have an RGB input on your laptop, then you can connect monitor A to your laptop.

In the Back of Monitor B, There is a HDMI output and you have an HDMI input on your laptop, then you can connect monitor B to your laptop

This is the older way to setup dual monitors. Generally an HDMI adapter is needed to setup two monitors.

Mark Franks Mark Franks is an author, entrepreneur, and Youtuber who has a strong passion for technology. He's the owner of Plentyofgadgets and has authored three books to date. Mark believes in a future where technology pushes the limits of what's possible and what's not. He also believes it's better to be well informed and prepared to take on any new technology of the future than to sit back a let innovation pass us by.

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