Samsung will let you use the Galaxy Z TriFold as a secondary monitor for your PC

The Galaxy Z TriFold can be used as an additional monitor for your Windows PC thanks to Samsung's Second Screen feature. Here ...
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Yes, You Can Use Your iPad As a Second Monitor Without Sidecar

Sometimes you just need a quick and easy way to connect a second monitor, without dealing with a whole new display. Apple's Sidecar feature lets you turn your iPad into a second display for the Mac, ...

Samsung Galaxy Z TriFold can double as a secondary monitor for your laptop or PC

Samsung’s Galaxy Z TriFold can now act as a wireless second screen for Windows PCs, using Second Screen and Miracast to ...
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Compal Hybrid AIO concept PC is a laptop, tablet, and dual-screen desktop

Plenty of people use their laptop computers like desktops by connecting an external display, keyboard, and mouse. But Compal’s Hybrid AIO concept PC goes a step further than that… and then a few steps ...