smartctl 6.2 2013-07-26 r3841 [x86_64-linux-4.0.4-unRAID] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

/dev/sda: Unknown USB bridge [0x058f:0x6387 (0x103)]
Please specify device type with the -d option.

Use smartctl -h to get a usage summary

