Mesa 7i84 setup procedure

I am currently using a mesa 7i92 and 7i77d combo and I need to add more inputs and outputs .I bought a 7i84d card .How do I link this to my current setup ?

From the manuals ,I think that it connects to the 7i77 via cat6 cable ?

How do I update the software to accomodate the 7i84 ? 

dctrytsman wrote:

From the manuals ,I think that it connects to the 7i77 via cat6 cable ?

Yes, cut one in half, wire one side to Mesa 7i77 and insert the RJ45 in Mesa 7i84.

dctrytsman wrote:

How do I update the software to accomodate the 7i84 ? 

You do not.
It just works, it is a Smart Serial card.
You do have to edit the hal file, though. Or not, it might already be in PncConf.