A device includes a substrate, a first antenna connection, and a first retention mechanism. The substrate has a top surface and a bottom surface. The first antenna connection is mounted directly to the top surface of the substrate, and is configured to connect with a first antenna. The first retention mechanism is connected at a first location of the bottom surface of the substrate to provide support for the substrate at the first antenna connection when the first antenna connection is connected to the first antenna. The first location of the first retention mechanism is selected to be directly below the first antenna connection.