One example of a system includes a system board including first contacts and second contacts and a cage attached to the system board. The cage includes a first side over the first contacts and a second side over the second contacts. A first lever is coupled to the first side of the cage and pivotable with respect to the cage. A second lever is coupled to the second side of the cage and pivotable with respect to the cage. A removable transceiver module includes third contacts. The transceiver module is installable in at least one of the first side and the second side of the cage using at least one of the first lever and the second lever.