pu port             /dev/ttyUSB0
pu baudrate         19200
pu bits             8
pu parity           N
pu stopbits         1
pu hasdcd           No 
pu rtscts           No 
pu xonxoff          No 

Starting......                                          
                                                        
      ******************************************************************
      *                                                                *
      *   SuperStack 4 Switch 5500G-EI 24-Port BOOTROM, Version 4.03   *
      *                                                                *
      ******************************************************************
                                                        
      Copyright (c) 2004-2007 3Com Corporation and its licensors.
      Creation date   : Jan 23 2007, 11:19:21           
      CPU type        : BCM1122
      CPU Clock Speed : 400MHz
      BUS Clock Speed : 33MHz
      Memory Size     : 128MB

      Mac Address     : 0022573c6480


Press Ctrl-B to enter Boot Menu... 0
Auto-booting...
Decompress Image..............................................................................................................................................!
Starting at 0x80020000...