A portable appliance may be provided. It may comprise a storage device operable for storing at least one application software program, a processor operable for executing the at least one application software program, a broadband communication interface plug, pluggable to a computing device, and a broadband communication interface socket adapted for receiving a second broadband communication interface plug of a second portable appliance of a same kind. The present invention also discloses a method for operating the portable appliance, wherein the method stores at least one application software program, executes the at least one application software program, generates user interface data, receives user interface response data, and receives a second broadband communication interface plug of a second portable appliance of a same kind in the broadband communication interface socket of the portable appliance.