Cards (ONS 15454 SDH and ONS 15310-MA SDH only) Use the Cross-Connect > Cards subtab to perform cross-connect card (side) switches. Item Description Cross-Connect Cards Shows the cross-connect card slots and their states: Active, Standby, or Empty (if no cross-connect card is installed). Switch Performs a cross-connect card switch, that is, the active card becomes the standby, and the standby card becomes the working cross-connect card. Lock Locks the cross-connect cards in their current working and protect statuses. Unlock Unlocks the cross-connect cards. Help Displays context-sensitive help.