Windows to Windows Setup:1. Connect devices to same Wi-Fi network.2. Adjust 'Projecting to this PC' settings in primary Windows device.3. Use 'Connect' app on secondary laptop to link devices.
Mac to Mac Setup Using Sidecar:1. Verify compatibility with Sidecar.2. Use same Apple ID on both devices.3. Access Sidecar settings on primary Mac to connect.
Synergy, Space Desk, Duet Display for flexibility and cross-platform compatibility.
Address connectivity issues, resolution mismatch, lag by restarting devices, checking network, updating drivers/software.
Stable, fast Wi-Fi or Ethernet connection is crucial for a smooth experience.