Actually, depending on age, you need to replace the backplane on the first shelf to swap to the new highway card. The original few releases of that old unit has a seperate highway and CPU card, unless someone already upgraded that. That is not as hard as it sounds, though. If I recall, you pull out all the cards in the first shelf, remove 6 or 8 screws, pop out the old backplane (slight bending necessary) pop in the new one, then replace all the cards, except using the new highway card tied to a new ECS cabinet. The software upgrade is even easier. One of the nice things about Iwatsu is it is simple to upgrade even the oldest ADIX to the current O.S.
