I have a couple of Nexus N2K-B22HP-P in an HP C7000 chassis with a HP Integrity blades.
The blade comes with 4 Nics but from the N5548 On only see 1 nic visible from the network as anybody come across this issue.
Fex Port State Fabric Port
Eth123/1/1 Up Po123
Eth123/1/2 Up Po123
Eth123/1/3 Up Po123
Eth123/1/4 Down Po123
Eth123/1/5 Down Po123
Eth123/1/6 Down Po123
Eth123/1/7 Up Po123
Eth123/1/8 Down Po123
Eth123/1/9 Up Po123
Eth123/1/10 Up Po123
Eth123/1/11 Down Po123
Eth123/1/12 Down Po123
Eth123/1/13 Down Po123
Eth123/1/14 Down Po123
Eth123/1/15 Up Po123
Eth123/1/16 Down Po123