What is the DVD drive? Not sure if that is the same thing in my mind. I can use USB flash drive, Hard drive with that port for USB sharing, but not sure if your DVD driver can be used in that way.
Could you please share a link or picture of it?
BTW, it works when you connect to the PC directly, right?

Kevin

It's just a standard external DVD drive. I tried both an ASUS and an LG. They work fine when attached directly to my laptop but I have multiple laptops without DVD drives built in. This morning I swapped out the USB cable to see if that could be the issue -- apparently that indeed was part of the problem. At least now the device is seen by the router so that's a good start. However, Win 10 still won't access the device -- possible firewall issue? Any ideas on what port might need to be opened or what kind of setting might need to be changed?