Unassign a wireless device You can remove the assignment of a single wireless devices to a controller. Navigate to the Assigned Wireless I/O folder of the controller. Drill down to the device under the Devices folder of the WIOC. Right-click the device and select Delete Assignment. Note: A confirmation dialog appears. Click Yes to delete the assignment. Note: The device is removed from the Assigned Wireless I/O folder and the controller name is removed from the device in the Wireless I/O Network.