AIW X600 Pro (PCI-X) Software Disks

The AIWR X600 Pro came with 4 disks. Pinnacle Studio, Mediator 7, and two
Software Catalyst Disks. That's the question. Why two Software Disks. No
they are not labeled 1 and 2. The only dif between them is the (what I
assume is) serial number. You know, first 3 digits 180, then a dash, then 6
digits/characters, then a dash and 100. Was that a mistake? Did someone get
their AIWR without software (;-). If it's a mistake, which one should I use?
I would assume the latest one. One one, the first letter matches the letters
on the other disks. One one it no where close? Is there any "secret code" to
those numbers they use?