Review on NexiGo 2021 4K Portable Monitor Computer: Premium 15.6" Screen, Stunning 3840X2160P Resolution, PM4K15-AM02, HD Display by Joseph Day

Of course, when running alongside my Surface Pro 7 it's bigger, but there's no apparent difference in screen quality or resolution. Looks good, no problem. Coverage/protection is not very good. It takes some time to figure out how to fold it so that it sits close to the right edge. And that still doesn't leave you with many options for viewing angles etc. As others have pointed out, operating at full brightness requires a separate power supply - your laptop probably won't supply enough power over USB-C to power it. Others claim that the laptop's performance runs at lower brightness levels. I didn't try. Watch out for USB-C cables. Some USB-C cables can handle high power (65W+), some can handle high data rates (10 Gbps), and some can handle both. But many cannot do both. You'll most likely need a high-speed data cable for your laptop and a separate high-speed cable for your USB-C power adapter. Both are included, but neither is very long. Don't buy a cheap USB-C cable as it doesn't work for power or video.