A portable device (10) comprising a casing (16) with at least one function key (12), a recess (20) in a wall of the casing (16) for accommodating a connector (22) when the connector (22) is not in use, a connector cable (36) for permanently connecting the connector to an internal circuitry of the portable device (10); the recess being sized, shaped and located as to not interfere with operation of the plurality of function keys (12); the connector (22), when in the recess (20), having a side surface (62) substantially coplanar with the wall (18). The connector (22) and the connector cable (36) are for enabling: data transfer both ways between the portable device (10) and another device (58), and one-way power from the another device (58) to the portable device (10) when the another device (58) is a host for the portable device (10); and data transfer both ways between the potable device (10) and the another device (58), when the portable device (10) is the host for the another device (58).