Install the spacedesk driver on your Windows primary PC from https://www.spacedesk.net, then install the app on your secondary device and connect via the app to extend or mirror your display.

Secondary devices include Windows desktops, phones, and Surface tablets running the spacedesk app; Macs are not supported. Ensure devices are on the same LAN or connected wirelessly.

Open the spacedesk app, connect to your primary PC, then select 'Extend' or 'Duplicate' mode within the app's display settings for your secondary device.

Yes, spacedesk functions over LAN, WLAN, or via mobile hotspot or USB tethering, without requiring an internet connection.

Ensure your primary Windows PC supports multiple monitors, install the driver, and connect secondary displays via the spacedesk app to extend your desktop across multiple screens.

Use a stable wired or WiFi network, minimize background traffic, and ensure both devices have sufficient resources for smooth display performance.

spacedesk is free to use; no subscription or in-app purchase is required for basic extended or mirrored display functionalities.

Display quality depends on your network speed and device capabilities; higher resolutions may cause latency. Adjust settings for optimal performance.

Check if both devices are on the same network, ensure the driver and app are installed correctly, and restart both devices. Refer to the user manual for troubleshooting tips.