I've been trying to wrap my head around this problem. I just installed a new server (Synology RS3416xs+ with Intel X520-DA2 CNA) today and attempted to attach the SFP+ cabling to our Cisco 2960-S Switch. I keep getting this error: "Te1/0/1: This port has been disabled because Non Compliant Gigabit Interface Converter (GBIC) connector detected."
What is bizarre is that I'm using Cisco cables (SFP-H10GB-CU1M) to connect. I purchased these cables from LANstreet and they appear to be genuine Cisco SFP+ cables/connectors.
Anyone have any idea as to how to resolve this problem?