If you use multiple computers at once, constantly switching keyboards and mice can be frustrating. With Mouse Without Borders in Microsoft PowerToys, you can control up to four PCs using a single mouse and keyboard—just like using multiple monitors.
This feature allows seamless cursor movement between systems, clipboard sharing, and even file transfer. In this guide, we’ll walk you through how to set it up and use it effectively.
How to Use Mouse Without Borders in PowerToys
Follow the steps below to connect and control multiple PCs.
1. Install PowerToys on All PCs
- Download and install Microsoft PowerToys on all computers you want to connect.
- Launch PowerToys after installation.
2. Enable Mouse Without Borders
- Open PowerToys.
- Go to Mouse Without Borders in the sidebar.
- Toggle it On.
Do this on all PCs.
3. Set Up the Main PC
Choose one computer as the primary system.
- On the main PC, click New Key.
- Note the:
- Security Key
- Computer Name
You’ll need these for the other PCs.
4. Connect Other PCs
On each secondary PC:
- Open PowerToys → Mouse Without Borders.
- Click Connect.
- Enter:
- Security Key
- Main PC name
- Click Connect.
5. Arrange PC Layout
Once connected:
- Go to Device Layout in settings.
- Arrange PCs (left, right, top, bottom) to match your physical setup.
This allows smooth cursor movement between screens.
6. Move Mouse Between PCs
- Move your cursor to the edge of one screen
- It will seamlessly appear on the next PC
No switching needed.
7. Share Clipboard Across PCs
You can copy and paste between systems.
- Copy text or files on one PC
- Paste on another
This works automatically when connected.
8. Transfer Files Easily
- Copy a file on one PC.
- Move cursor to another PC.
- Paste the file.
Files are transferred over your network.
Useful Features
- Control up to 4 PCs
- Shared clipboard
- File drag-and-drop
- Keyboard and mouse sharing
- Secure connection via key
Troubleshooting Tips
- Ensure all PCs are on the same network
- Disable firewall temporarily if connection fails
- Re-enter the security key if pairing issues occur
- Restart PowerToys on all devices
Conclusion
Using Mouse Without Borders in Microsoft PowerToys is one of the easiest ways to control multiple PCs with a single keyboard and mouse. It eliminates the need for extra hardware and makes multitasking across systems seamless.
By setting up a primary PC, connecting others with a security key, and arranging your layout, you can create a smooth multi-device workflow that feels like using one extended system.
