sudo smartctl -i /dev/sdb 
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.5.0-2-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

/dev/sdb: Unknown USB bridge [0x0bc2:0x3322 (0x100)]
Please specify device type with the -d option.

Use smartctl -h to get a usage summary