NEW CORRECT 5-Pin FOXCONN DC Jack Power Plug In Charging Port Connector Socket for ASUS Zenbook UX31E UX21E This is the hard to find CORRECT 5-PIN DC Jack needed for these Zenbook models. This part CANNOT be used in the UX31A, UX32VD, X201E etc. Those models all use a different 7-pin version which CANNOT be used in the UX21E or UX31E. This is the Charging Port INSIDE the notebook. The AC Power Adapter plugs into this port to charge the battery.