In this mode, your monitor may not receive a full resolution video signal if your laptop graphics card is not powerful enough to deliver the full resolution to both displays.

Here's a quick guide to setting up dual monitors for your gaming PC.

As it stands, you have to connect your monitor from the 15pin or BNC port on the back to your vid card's output (usually 15pin in PC land). Quote Report ...

We're having a look at how to connect a monitor to the ASUS ROG Ally. This would mean you could play on a larger screen.