If anyone knows the differences, or can point me to diagrams, charts, documentation, etc, that describes the differences between the two modules, I'd appreciate the help. These may be identified as "output memory", "buffer queues" or "output queues". I found an old "Reviewers Guide" that shows charts for "Per-Port Buffer Sizes" for the various numbers of queues (8/4/2) options for V1 modules. I'm looking for similar info for the V2 modules.