Dual configuration enclosure with optional shielding

An enclosure for an electronic device that includes a plurality of wireless antennas, the enclosure comprising:

• a metallic cage, the metallic cage including sides, a bottom and a top that collectively define an enclosed volume, the top being slanted at a non-zero angle with respect to the bottom;
• an outer enclosure at least partially enclosing the metallic cage, the enclosure defining a plurality of structural posts and a top surface that faces the top of the metallic cage, the top surface defining a plurality of recesses, each of the plurality of recesses being configured to receive a corresponding one of the plurality of wireless antennas of the electronic device, wherein the plurality of recesses are oriented to provide a predetermined angular displacement between the plurality of antennas;
• a set of beveled through-holes defined in the top of the metallic cage, the set of beveled through-holes being aligned with respective ones of the structural posts.