🔹 Using Spacedesk to Turn Laptop into Second Monitor
Step 1: Install Spacedesk on Your New PC (Windows 11 – “Server”)
Go to 👉 https://spacedesk.net.
Download Spacedesk DRIVER Software for Windows Primary PC (Server).
Install it on your new PC (the one you want to extend from).
After install, Spacedesk will run in the background (you’ll see it in the taskbar/system tray).
Step 2: Install Spacedesk on Your Old Laptop (Windows 10 – “Viewer”)
On your laptop, go to the same site.
Download Spacedesk VIEWER Software for Windows Secondary Machine (Viewer).
Install it.
Step 3: Connect Laptop to PC
Make sure both devices are on the same network:
Best: connect both with LAN/Ethernet cable to your router.
Okay: both on the same Wi-Fi.
Open Spacedesk Viewer on your laptop.
It should automatically detect your new PC (by IP and name).
Click Connect.
Step 4: Adjust Display Settings
On your new PC, press Win + P → select Extend.
Or go to Settings → Display and arrange the monitor positions.
⚡ Performance Tips
LAN/Ethernet connection = best performance, minimal lag.
On Wi-Fi, keep both devices close to the router.
You can adjust resolution and quality in Spacedesk Viewer settings if needed.
✅ That’s it! Your old laptop now works as an extended monitor for your new PC.