Dell Inspiron 11 (3147, Mid 2014) - Manual (Page 47)

8 Disconnect the speaker cable and the power-adapter port cable from the
system board.
1 I/O-board cable 2 keyboard cable
3 hard-drive cable 4 touchpad cable
5 speaker cable 6 power-adapter port cable
9 Remove the screw that secures the system board to the palmrest and
keyboard assembly.
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