Detachable motor powered surgical instrument

A surgical stapling system, comprising:

• a proximal portion;
• a stapling portion removably coupleable to said proximal portion at a coupling interface;
• a motorized system;
• a control circuit in electrical communication with said motorized system, wherein said control circuit comprises a first plurality of contacts and a second plurality of contacts;
• and
• a third plurality of contacts movable relative to said control circuit between:
• a first position in which said third plurality of contacts are in electrical communication with said first plurality of contacts;
• and
• a second position in which said third plurality of contacts are in electrical communication with said second plurality of contacts;
• wherein said third plurality of contacts are movable into electrical communication with said control circuit based on said stapling portion being coupled to said proximal portion.