One embodiment is directed to a multi-rack rack controller for an automated infrastructure management (AIM) system comprising a plurality of independent patching equipment bus interfaces. Another embodiment is directed to a rack controller comprising at least one rack controller interface configured to connect the rack controller to another rack controller. Each rack controller interface comprises a respective termination circuit. The rack controller is configured to determine whether each rack controller interface is connected to another rack controller as a function of a respective sense signal developed by the termination circuit associated with said rack controller interface. Another embodiment is directed to a rack controller comprising a base unit having a locate button disposed on the front of the base unit. Other embodiments are disclosed.