Dell Inspiron 17 (5749, Early 2015) - Manual (Page 53)

Removing the I/O Board
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
Prerequisites
1 Remove the battery .
2 Remove the base cover .
3 Follow the procedures from step 1 to step 3 in removing the hard drive .
4 Follow the procedures from step 1 to step 2 in removing the optical drive .
5 Remove the keyboard .
6 Remove the palm rest .
Procedure
1 Remove the screw that secures the I/O board to the computer base.
2 Carefully lift the I/O board and turn it over.
3 Lift the connector latch and using the pull tab, disconnect the I/O-board
cable from the I/O board.
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