smartctl 5.41 2011-06-09 r3365 [i686-w64-mingw32-xp-sp3] (sf-win32-5.41-1)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

 \\.\PhysicalDrive2: successfully opened
  SMART_GET_VERSION failed, Error=50
  IOCTL_STORAGE_QUERY_PROPERTY returns:
    Vendor:   "WD      "
    Product:  "Ext HDD 1021    "
    Revision: "2002"
    Removable: No
    BusType:   0x07
PhysicalDrive2, "WD Ext HDD 1021 USB Device":
 \\NN-201812D2BACF\root\cimv2:Win32_USBController.DeviceID="PCI\\VEN_1106&DEV_3432&SUBSYS_34321106&REV_01\\4&5C6A96F&0&0018":
  |   "USB\\VIA_ROOT_HUB\\5&1815F3C&1"
  |   "VUSB\\VID_2109&PID_0811\\6&32ECBBE&0&1"
 \\NN-201812D2BACF\root\cimv2:Win32_USBController.DeviceID="PCI\\VEN_1033&DEV_0194&SUBSYS_84131043&REV_03\\6&DBB0E0B&0&00080020":
  |   "NUSB3\\ROOT_HUB30\\7&1FF6A95B&0"
  +-> "USB\\VID_1058&PID_1021\\574D41565532323532323431"
  +--> "USBSTOR\\DISK&VEN_WD&PROD_EXT_HDD_1021&REV_2002\\574D41565532323532323431&0"
  |    Name: "WD Ext HDD 1021 USB Device"
 \\NN-201812D2BACF\root\cimv2:Win32_USBController.DeviceID="PCI\\VEN_10DE&DEV_026D&SUBSYS_10C61734&REV_A3\\3&61AAA01&0&58":
  |   "USB\\ROOT_HUB\\4&1F71480C&0"
 \\NN-201812D2BACF\root\cimv2:Win32_USBController.DeviceID="PCI\\VEN_10DE&DEV_026E&SUBSYS_10C61734&REV_A3\\3&61AAA01&0&59":
  |   "USB\\ROOT_HUB20\\4&2A9A7D9F&0"
  +-> "USB\\VID_058F&PID_6254\\5&1B4B4F2C&0&1"
  +-> "USB\\VID_1058&PID_1003\\57442D574D41565530333236313333"
  +--> "USBSTOR\\DISK&VEN_WD&PROD_15EADS_EXTERNAL&REV_1.75\\57442D574D41565530333236313333&0"
  |    (Name: "WD 15EADS External USB Device")
  +-> "USB\\VID_058F&PID_6254\\5&1B4B4F2C&0&3"
  +-> "USB\\VID_1058&PID_1021\\533159364A314D53413030363935"
  +--> "USBSTOR\\DISK&VEN_WD&PROD_EXT_HDD_1021&REV_2021\\533159364A314D53413030363935&0"
  |    Name: "WD Ext HDD 1021 USB Device"
/dev/sdc: Unable to read USB device ID
Smartctl: please specify device type with the -d option.

Use smartctl -h to get a usage summary