This read-only object identifies the type of interconnect cube module installed in this switch chassis, such as a dual Base-T plus dual LC fiber module or a quad Base-T copper module. An administrator checks this to know exactly what expansion hardware is populated in a given switch slot before planning cabling or capacity changes. For example, seeing agentSwitchCubeType report quadT(3) tells an operator the module provides four copper ports rather than the fiber option.