SCOM 2012 network discovery - not all the ports are discovered

Hello,

I'm trying to add a CISCO switch MDS-9124 but I'm having some issues with the discovery

Looks like the switch, power supplies, memory, cpu,fans and one port (management interface) have been discovered but the rest of the ports no.

I'm not talking about monitoring those ports, I'm talking about the discovery

I'm looking on Discovery Inventory view by port (network) view and the Diagram view of the network device and I'm not finding the rest of the ports

I've deleted, added back, rediscovered, moved to a different MS or GW and no luck. 

any ideas?