Dell Inspiron 15 (3541, Mid 2014) - Manual (Page 34)

NOTE: Keyboard-backlight cable is present only on a backlit-keyboard.
1 Place the keyboard on a flat and clean surface.
1 keyboard cable 2 keyboard-backlight cable
3 keyboard
CAUTION: Do not apply excess pressure while folding the cables.
2 Lift the keyboard cable and gently fold the keyboard-backlight cable at
the fold line.
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