Hello,
works perfectly. However, the screen must be supplied separately via a USB power supply unit. Do this via a second RP4 power supply unit. You also need a micro HDMI to HDMI cable. I am absolutely satisfied with the screen. I need it with the RP4, as well as with the notebook. On my notebook, Dell XPS 15 9510, the USB-C connector can power the screen. The screen stand is a little fiddly, but it fits.