The double asterisk generally indicates the SFM’s frequency capabilities, indicating either that 
they are operating at 125 MHz or that the frequency capability, which is stored in an EPROM, 
cannot be determined.
If there are no fibre ports in the line card, just the header under show inventory media 
is displayed. If there are fibre ports but no optics inserted, the output displays "Media not 
present or accessible".
Example (C300)
FTOS# show inventory
Chassis Type : C300
Chassis Mode : 1.0
Software Version : FTOS-EF-7.6.1.0
Slot Item           Serial Number Part Number Revision
-----------------------------------------------
     C300           TY000001400   7520029999 04
3    LC-CB-GE-48T   FX000020075   7520036700 01
0    LC-CB-RPM      0060361       7520029300 02
0    CC-C-1200W-AC  N/A           N/A        N/A
1    CC-C-1200W-AC  N/A           N/A        N/A
0    CC-C300-FAN
* - standby
Software Protocol Configured
-------------------------------------------------
OSPF
FTOS#
Example (E300)
FTOS# show inventory
Chassis Type : E300
Chassis Mode : TeraScale
Software Version : FTOS-EF-7.5.1.0
Slot Item         Serial Number Part Number Revision
---------------------------------------------------
     E300           0015259       7520009601 02
1    LC-EF3-10GE-2P 0017259       7520012501 01
2    LC-EF3-GE-48T  0017269       7520009702 01
3    LC-EF3-1GE-24P 0031151       7520014206 04
4    LC-EF3-1GE-24P 0017291       7520014202 02
0    LC-EF3-RPM     0031177       7520013808 05
0    CC-E-SFM       0019071       7520003706 A
1    CC-E-SFM       0019120       7520003706 A
1    CC-E300-PWR-DC TDX0524-00031 7520015400 A
0    CC-E300-FAN    N/A           N/A       N/A
* - standby
Software Protocol Configured
--------------------------------------------------
  BFD
  BGP
  ISIS
  OSPF
  RIP
  OSPFV3
FTOS#
147