How do I start a private message? [URL] No mention that the USB-C is capable of video display.  
Attempting to connect a second monitor to my Inspiron 3891 via a USB-C to DisplayPort adapter however the system is saying “incompatible device”. I’m assuming this is because it’s not a thunderbolt port. Am I correct  that the transmission of a video signal won’t occur if it’s not a thunderbolt port? Thanks in advance
USB-C