When you do get it working you may be a bit disappointed as the USB ports seem to be only USB 2 so speeds will never be very fast. Probably more suited to printer sharing than files.
The way I got it to work was to create a drive letter in Windows (I assume you are using Windows).
Go to Sharing in the router and you should see your drive under drives. click on it and copy the path shown.
Mine is \\vodafone.broadband\Teclast_CoolFlash_1_048d .
Paste that into File manager and you should see the contents of the drive.
For some reason a couple of my PC's couldn't see the drive using it (probably DNS related) and I had to replace the "vodafone.broadband" with the routers IP address.
If you are using backup software then that may be all you need to know, but if you want a drive letter in Windows for it then once you have it showing in file manager follow the network icon on the left until you see the drive and right click on it and choose "Map network drive..".
That's how I did it, possibly not the correct way, but it worked for me.
Edit. I'm pretty sure my stick is NTFS formatted.
