Usually monitors with USB ports are simply a monitor and a USB hub in the same chassis. You need an additional cable to link up the USB hub. In your PA248Q's case, the "upstream" USB3.0 port is on ...

Generic PnP Monitor driver is used to detect & install Driver of External Monitor attached to it. Working fixes for Dell, Samsung, etc. here in this post.

Install Monitor Driver Insert the installation or driver CD that shipped with your monitor into the optical drive of the computer.