Why is VID and PID of a USB device necessary if its mounted via /mount/root?

I am trying to use the F3 program (Fight flash fraud) to test an external USB disk drive. The name of this external USB disk drive is "TEST A". The syntax of the commands that I would like to use are as follows: > f3write /mount/(username folder)/(USB ID) > Example: f3write /mount/root/7A3C-VD3D > > f3read /mount/(username folder)/(USB ID) > Example: f3read /mount/root/7A3C-VD3D Documentation: https://fight-flash-fraud.readthedocs.io/en/latest/usage.html#how-to-use-f3write-and-f3read Now from the command above, one would see the VID and PID of the USB Flash drive would be 7A3C-VD3D and I would infer that I would need to determine the VID and PID of my external hard disk drive to be able to scan it with the f3 program. However I tried lsusb to get the VID and PID of my device > Bus 002 Device 002: ID 0bc2:5031 Seagate RSS LLC FreeAgent Go Flex USB > 3.0 Which is 0bc2:5031 So following the syntax of the command above I tried: > f3read /mount/root/0bc2-5031 It does not work. The program tells me It can't find the directory. > f3read /media/root/0bc2-5031 Again it does not work. The program tells me It can't find the directory. However executing the command > f3read /media/root/"TEST A" It works. The f3 program reads the device. 1. Why is it necessary to determine the VID and PID of a USB device if its mounted via /mount/root/? 2. Why is it unnecessary to determine the VID and PID of a USB device if its mounted via /media/root? If there's a backstory to it as well, I would like to know to gain a deeper understanding. AFAIK, /mnt is for temporary mounting and /media is IF the linux distro auto mounts the device for you, then the device will most likely appear here. Its annoying to have to constantly check 2 directories whenever mounting a USB.