In my case, I use Solid Explorer to transfer all files (since it also has network support, and I usually transfer straight to my NAS). But many people also prefer others like ES File explorer, or others.
Hey many of the new 5 Series of Buzz boxes (maybe all), recently "Added Network sharing option which makes your internal device storage visible to other devices and computers on your home network" So you'd be able to browse the directories directly from your home PC.