Rockwell Automation 1757-SWKIT3200 ProcessLogix R320.0 Installation and Upgrade Guide - Manual (Page 220)

Publication 1757-IN032B-EN-P - April 2001
6-4 New Functions and Features
and memory capacity, this card allows for Increased System Scalability
mentioned above.
The 9904-KTCX15 card will no longer be offered as part of
ProcessLogix new system orders for Release R320.0 and beyond. The
9904-KTCX15 will only be supported as a replacement/spare for
existing customers on previous releases.
ATTENTION
!
Existing ProcessLogix systems must upgrade from the
9904-KTCX15 card to the new 1784-PCIC card when
migrating to the R320.0 Release, even if additional
controllers are not required.