How to use one mouse for two computers - Mouse without Borders

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Do you use two or more computers at the same time? Do you wish you could use just one mouse and keyboard for all of them?

Then Good news! You can do that easily using a free tool from Microsoft called Mouse Without Borders.



In this blog, I’ll explain everything in simple words – what it is, why it’s useful, and how to set it up step by step.

What is Mouse Without Borders?

Mouse Without Borders is a free app made by Microsoft. It lets you use one mouse and keyboard to control up to four Windows computers.

Here’s what it can do:

  • Move your mouse across screens of different computers.

  • Type with one keyboard on all connected computers.

  • Copy and paste text between them.

  • Drag and drop files from one PC to another.

  • Works when all computers are connected to the same Wi-Fi or LAN.

It’s like using two computers as if they were one.

Why Use It?

This tool is helpful when:

  • You use a work laptop and a personal computer side by side.

  • You want to avoid switching keyboards again and again.

  • You often move files or copy text between computers.

It makes your desk clean and your work faster.

What Do You Need?

  • All computers should be running Windows (7, 10, 11, etc.).

  • All should be on the same network (Wi-Fi or LAN).

  • You must install Mouse Without Borders on each one.

How to Set Up Mouse Without Borders

Follow these simple steps:

Step 1: Download the App

  1. Go to the official Microsoft page:
    👉 Download Mouse Without Borders

  2. Click Download, then install it like any other app.

Step 2: Install on First PC

  1. Open the app after installing.

  2. It will ask: “Is this the first computer?”
    Click Yes.

  3. You will see:

    • A Security Code

    • Your Computer Name

Keep this window open.

Step 3: Install on Second PC

  1. Install the app on your second PC.

  2. When it asks: “Is this the first computer?”, click No.

  3. Now, enter:

    • The Security Code

    • The Computer Name (from the first PC)

Then click Link.

Step 4: Move Your Mouse

Once connected, try moving your mouse to the edge of the screen.
It should now appear on your second computer!

You can also:

  • Copy text from one PC and paste it on another.

  • Drag and drop files across both computers.

Arrange Screens

Inside the app, you’ll see screen icons.
You can drag them to match your physical screen layout.
For example:
If your second PC is on the left side, move its icon to the left in the app too.

This helps the mouse move in the correct direction.

Frequetnly Asked Questions

Does it need the internet?

No, it only needs both PCs to be on the same network (Wi-Fi or Ethernet).

Will it work on Mac or Linux?

No, it works only on Windows PCs.

Is it safe?

Yes. It’s made by Microsoft and uses a secure connection with a security code.