const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
const char *usb_model = NULL, *usb_vendor = NULL, *usb_rev, *usb_serial;
const char *if_class, *if_subclass;
const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
const char *usb_model = NULL, *usb_vendor = NULL, *usb_rev, *usb_serial;
const char *if_class, *if_subclass;