I'm trying to run a Latitude 5490 with three external screens (laptop screen disabled) using:

VGA --> VGA

HDMI --> DVI

USB-C --> DP

However as soon as I plug in the USB-C cable the VGA port is switched off.

Is it possible with the 5490 to support three monitors without a dock?

If the only way to do it is with a dock which docks are supported?