User-installable wireless communications module

A media processing device, comprising:

• a housing including a set of exterior walls;
• a door removable to expose an opening in a first one of the walls;
• a chamber defined within the housing along the first one of the walls and accessible via the opening, the chamber including an electrical connector disposed on a first surface of the chamber that is a parallel to the first one of the walls, the electrical connector faces in a direction towards the first one of the walls;
• a channel defined within the housing, the channel open to and extending from the chamber, away from the first one of the walls in an opposite direction relative to the direction that the electrical connector faces, and along a second one of the walls, the second one of walls being adjacent to the first one of the walls;
• the chamber and the channel configured in combination to receive a wireless communications module that includes a body and an antenna support of the module extending from the body, the channel is configured and dimensioned to receive the antenna support via the chamber and the chamber configured and dimensioned to receive the body.