One cable is all you need. The USB-C technology carries both the power and the display signal to the screen in one cable. It not only looks ultra-clean and sleek but also greatly improves portability of the monitor.
The latest USB-C powered portable display from AOC, I1601FWUX boasts a vivid 15.6” IPS display with wide viewing angles (160/160°) and 5 ms GtG. Includes smart cover and auto-pivot mode.