Ciao,
di seguito mostro alcuni "show" dell'apparato:
routerB#show version 
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.3(11)T5, RELEASE SOFTWARE (fc1)
Technical Support: 
http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Sat 02-Apr-05 08:54 by yiyan
ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1)
routerB uptime is 23 minutes
System returned to ROM by power-on
System image file is "flash:c1841-ipbase-mz.123-11.T5.bin"
Cisco 1841 (revision 0.0) with 114688K/16384K bytes of memory.
Processor board ID 
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
31360K bytes of ATA CompactFlash (Read/Write)
Configuration register is 0x2101
**********************************************************
routerB#show flash: 
-#- --length-- -----date/time------ path
1     12390908 Feb 22 1907 17:31:44 +00:00 c1841-ipbase-mz.123-11.T5.bin
19542016 bytes available (12394496 bytes used)
**********************************************************
routerB#dir all-filesystems
Directory of archive:/
No files in directory
No space information available
Directory of system:/
    3  dr-x           0                    <no date>  memory
    1  -rw-         496                    <no date>  running-config
    2  dr-x           0                    <no date>  vfiles
No space information available
Directory of nvram:/
  190  -rw-         776                    <no date>  startup-config
  191  ----           5                    <no date>  private-config
    1  -rw-           0                    <no date>  ifIndex-table
196600 bytes total (194743 bytes free)
Directory of flash:/
    1  -rw-    12390908  Feb 22 1907 17:31:44 +00:00  c1841-ipbase-mz.123-11.T5.bin
*************************************************************
INOLTRE, facendo show diag o show interfaces non esce nessuna INFO!
Ha anche uno slot esterno di 32MB.
HELP-ME!