~$ sudo smartctl --all /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.16.0-50-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

/dev/sdb: Unknown USB bridge [0x05dc:0xc753 (0x103)]
Please specify device type with the -d option.

Use smartctl -h to get a usage summary