Dell Inspiron 13z (N301z, Mid 2010) - Manual (Page 49)

14. Lift the left hinge-bracket off the computer base.
15. Disconnect the coin-cell battery cable, speaker cable, status light board cable, and the AC adapter connector cable from their respective connectors on
the system board.
16. Remove the four screws that secure the system board to the computer base.
1 left hinge-bracket 2 screw
1 AC adapter cable
connector
2 coin-cell battery cable
connector
3 status light board cable
connector
4 hard-drive cable
connector
5 speaker cable connector