![..//assets/img/kb/flex2-marker.png](..//assets/img/kb/flex2-marker.png)
The Flex II System offers an number of I/O Connections in its Door Groups. This section allows selecting default connections for each door group.
CyberAudit-Web automatically sets Relay 1 of each door group to Door Controller. Unless that is changed, each newly added Flex II Controller and Expander will automatically be configured with a Door Controller on Relay 1 of each door group.