Patent ID: 7343439

Claim:
A first removable module for use in conjunction with an electronic device and a second removable module, the electronic device having a first removable module slot, the second removable module having external I/O of one of a plurality of types, the first removable module comprising: a mechanical assembly and an electrical interface, each adapted to enable the first removable module to operatively nest in the first removable module slot; application specific circuitry for a predetermined application; and a second removable module slot adapted to enable the second removable module to operatively nest in the second removable module slot; wherein when the second removable module is operatively nested in the second removable module slot and the first removable module is operatively nested in the first removable module slot, the electronic device is provided with functionality at least in part based on the predetermined application and at least in part based on the external I/O type of the second removable module.