Patent ID: 8873239

Claim:
An electronic module comprising: a housing comprising a plurality of external faces, a first electrically-conductive toe, a second electrically-conductive toe, and a third electrically-conductive toe, each toe extending from a external face to an adjacent external face of the housing; a first magnetic element arranged within the housing and proximal the first toe; a second magnetic element arranged within the housing and proximal the second toe; a third magnetic element arranged within the housing and proximal the third toe; a circuit arranged within the housing, electrically coupled to the first toe, to the second toe, and to the third toe, the circuit operable between a first mode and second mode, the circuit operable in the first mode when the first toe is in contact with a first terminal of a second electronic module and the second toe is in contact with a second terminal of the second electronic module, the circuit operable in the second mode when the second toe is in contact with the second terminal of the second electronic module and the third toe is in contact with a third terminal of the second electronic module the circuit communicating a first voltage potential across the first toe and the second toe in the first mode and communicating a second voltage potential across the second toe and the third toe in the second mode, the second voltage potential different from the first voltage potential; the magnetic elements configured to transiently retain a second electronic module against the housing in both stacked and adjacent configurations; the first toe configured to communicate a portion of a power signal between the circuit and the second electronic module in either of the stacked and adjacent configurations; and the magnetic elements configured to repel contact between at least one toe and at least one terminal of the second electronic module in an upside-down configuration.