This article contains information about USB-C monitors not showing video correctly when connected to an Inspiron 7500, 7501 or Vostro 7500 system.
Inspiron 7500, 7500, and Vostro 7500 systems only support the DisplayPort (DP) 1.2 specification through the USB-C port. If you connect a DP 1.4 monitor, it may not display video correctly and cause the system to hang.
To resolve this behavior, you must set the monitor to the DP 1.2 setting before connecting it to the system.
If you have further questions about this article, contact Dell Technical Support.