Can I extend my laptop screen to a monitor?

Yes — you can extend your laptop screen to a monitor, giving each display its own independent desktop space instead of duplicating the same image across both.

Extending works through your operating system's display settings once the monitor is connected. On Windows 10/11, right-click the desktop, open Display Settings, and set the arrangement to Extend. On macOS, go to System Preferences and select Displays. The one prerequisite that catches buyers off guard: if you're connecting via USB-C, that port must support DisplayPort Alt Mode to carry a video signal — not all USB-C ports do, even on recent laptops.

• Extend mode gives each screen its own desktop space; mirror mode duplicates the same image on both screens.
• USB-C connections require DisplayPort Alt Mode support — Thunderbolt 3 and Thunderbolt 4 ports always qualify.
• MacBooks with M1, M2, M3, or M4 base chips support only mirror mode via a single USB-C cable; extended display requires dual USB-C cables on Pro or Max chip models.
• HDMI connections support extend mode on any laptop with an HDMI port and do not require DisplayPort Alt Mode.
• Pornitor 14-inch dual screen extenders run extend mode at 1920×1080 resolution and 60Hz refresh rate per panel.