Hi and thanks for your reply.
You are right, I do mean the ports 0c and 0d.
I want to use them as FC ports for redundancy and maybee better transfer rates,
but when I insert an SFP I receive the error message "The SFP in adapter 0e is not valid... adapter supports 10 Gbit/Sec
but inserted SFP supports 4, 8, 16 Gbit/sec"
Do I have to reconfigure the ports 0c and 0d?
In the GUI I see them configured as FC ports (see attached image)
![FAS2552_FC_ports.PNG FAS2552_FC_ports.PNG](https://community.netapp.com/t5/image/serverpage/image-id/8480i5939A4AB8D0B15A3/image-size/large?v=v2&px=999)
ag