robert@robert-desktop ~ $ sudo lsusb -v | grep iSerial
[sudo] password for robert:
  iSerial                 1 0000:00:14.5
  iSerial                 3 FPFDU16A20001907
  iSerial                 1 0000:00:13.2
  iSerial                 1 0000:00:13.0
  iSerial                 1 0000:00:12.2
  iSerial                 0
  iSerial                 1 0000:00:12.0