Setting both ends to either 100Mbps/full (or 1000Pbps/full) is acceptable as long as they both match.  Sorry for the confusion.
 I noticed that both the SP's in our CX4 - 480 have the requested Management Port Settings set at Auto with the Link Status  showing at 100 Mbps/Full Duplex. The switch ports that they are connected to are set for Auto and show as connected at  1000 Mbps/Full duplex.  We have been having performance issues recently - couldn't connect to SPA, couldn't perform SP collects etc.  I am wondering if this discrepancy is a possible cause of the issues we have been experiencing.  Thanks for your response,
What is the recommended Management Port Speed on CX4 SP's?