Complex sentence: In late 2009 with the release of the SMT product line, Smart Slot was slightly changed (claimed to be improved), the new card/slot design is referred-to as "Network Management Card 2" or NMC2.
Split into simpler sentences: In late 2009, with the release of the SMT product line, Smart Slot was slightly changed with claims of improvements. The new card/slot design is referred-to as "Network Management Card 2" or NMC2.