I have a TCL Roku smart TV with a USB port. Currently, if I plug a thumb drive into the port I can navigate to a media file and play it on the TV. What I would like to be able to do instead is to navigate to a folder on my PC across my network using wi-fi. I can't use the TV's ethernet port. Only the USB port. Is there some sort of dongle that I can buy that would allow me to do this? I'm not looking to cast to the TV. Just to play files that reside on my main PC.