Cisco ISA 3000 appliance comes in two types, one which supports 4 copper ports (ISA3000-4C-K9) and one which supports 2 fibre and 2 copper (ISA3000-2C2F-K9). We have purchased the latter one. My colleague raised a concern that in some cases, we can either use only fibre ports or copper but not both at the same time. I couldnt find any such info in the below two main docs.
Can someone please advise if this is true ?