I just downloaded the trial version of PTE v9. I also have a NAS where I store photos and videos. I am running Win10. I mapped a root folder on the NAS as a network drive on my PC (Z:). I would like the network drive to show up in the Drives drop-down list, but only my internal SSD (C:), internal HDD (D:), a USB disk (E:), and DVD drive (F:) show up.
I tried the suggested work-around, but I cannot use Windows Explorer to drag and drop photos stored on my NAS into the Project Options panel in PTE that says "Add images...here from a file list above." When I click on a JPEG and drag it into that PTE panel the cursor turns into a circle with a diagonal slash.