The WS-X4412-2GB-T (12 RJ45 and 2GBIC gig ports) is oversubsribed per the documentation the oversubscribed ports are segmented into groups of 4 ports each. Each group shares 1 Gbps of bandwidth. 6Gbps to the backplane. Does the changes to the switching fabric and throughput of a Sup III change that or is it a card limitation?