Dell Inspiron 14 (3420, Mid 2012) - Manual (Page 48)

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1 screw 2 USB board
3 USB-board cable
Replacing the USB Board
1 Follow the procedures in "Before You Begin" on page 9.
2 Slide the connectors on the USB board into the slots on the computer base
and align the screw hole on USB board with the screw hole on the
computer base.
3 Replace the screw that secures the USB board to the computer base.
4 Slide the USB-board cable into the connector on the system board. Press
down on the connector latch to secure the USB-board cable to the
connector on the system board.
5 Replace the optical drive. See "Replacing the Optical Drive" on page 24.
6 Follow the instructions from step 3 to step 7 in "Replacing the Palm-Rest
Assembly" on page 28.
7 Replace the battery. See "Replacing the Battery" on page 14.
CAUTION: Before turning on the computer, replace all screws and ensure that no
stray screws remain inside the computer. Failure to do so may result in damage to
the computer.
USB Board 48