Hi, everyone, I appreciate your help. All I need to know is if the 4 or 8 10Gb port modules (WS-X6704-10G and WS-X6708-10G)are hot swappable or do they require the 6500 chassis to be shut down before installing such modules, I need to upgrade from 4 to 8 port module and would to avoid bringing everything else down, thanks in advance.