The text below is copied from the website
http://forums.techguy.org/networking/587909-solved-i-have-unknown-device.ht
""Since the latest firmware update, I seemed to get a third ethernet ****t
appear (eth****t3) that had an unknown device attached to it. A ****t scan
revealed a Samba server running. Curious! The latest firmware, it would
seem, runs a file/print server on 192.168.1.253. I just popped a Bytestor
512Mb USB pendrive in USB ****t A and restarted the BT Home Hub, and named
the unknown device Bytestor.
After restarting the BT Home Hub, I now have a nice little NAS solution by
browsing to \\bytestor.home\bt_7g, nice one BT!
I'm going to try a USB ****table disk later, I'm not sure if it will be
able
to power it or not. The other thing to bear in mind is that it's a USB
****t
and not USB2, so it's only 12Mbits/s.""
I have tried this myself with a USB stick and mapped the drive
successfully.
MJP