If the Laptop External Monitor is not working ... When you already have 2 monitors and a third monitor is connected, the new monitor may display nothing even though it is visible in the Windows ...
But what if you don't want to use two active displays ... to use your MacBook with a monitor while the lid is closed: Pair your external keyboard and mouse to the laptop as usual.
With that in mind, the Arzopa Z1RC is the best portable monitor for most people. This 16in screen boasts 2.5K resolution that in our review delivered incredibly vivid colors and picture quality.