PORNITOR Screen Extender & Portable Monitor FAQ
Short answers to the questions people ask before and after buying a PORNITOR.
No. The extenders and portable monitors work as standard external displays over USB-C (DisplayPort Alt Mode) or HDMI, so Windows, macOS and ChromeOS detect them without software.
The 14-inch extenders are listed for laptops from 14 to 16.5 inches, the Z156Y21D for 15.6-inch-class laptops. Measure your screen diagonal and check that the lid is stiff enough to carry the extra weight.
Yes. Any single-screen model and the portable monitors work on every Apple silicon Mac. Multi-screen models depend on the chip: Pro and Max chips extend to both extra screens, while base M1 and M2 chips drive only one external display, so two screens mirror. See the compatibility table on the home page.
Usually the USB-C port does not carry video, the cable is a charge-only cable, or HDMI is used without the extra power cable. Try the cable from the box in another USB-C port, then HDMI plus power. Our no-signal guide walks through every step.
Yes. HDMI carries only the picture. Plug the supplied USB power cable into the extender and into a laptop USB port or a phone charger.
An extender attaches to the laptop lid and folds out beside the built-in screen. A portable monitor stands on its own cover or kickstand, so it also works with a phone or game console.
Yes, to the portable monitors and to the single extenders with mini HDMI or full-function USB-C. A phone needs video output over USB-C (for example Samsung DeX or an iPhone 15 or later).
PORNITOR is sold on Amazon. We found listings on Amazon.com, Amazon.ca, Amazon.co.uk, Amazon.de, Amazon.com.mx, Amazon.com.au and Amazon.co.jp. The range differs by country, so the buttons on this site only show stores where that model is listed.