Dell Inspiron 17 (5749, Early 2015) - Manual (Page 55)

Replacing 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.
Procedure
1 Slide the I/O-board cable into the connector on the I/O board and press
down the latch to secure it.
2 Turn the I/O board over and align the screw holes on the I/O board with
the screw holes on the computer base.
3 Replace the screw that secures the I/O board to the computer base.
Post-requisites
1 Replace the palm rest .
2 Replace the keyboard .
3 Follow the procedures from step 4 to step 5 in replacing the optical drive .
4 Follow the procedures from step 3 to step 5 in replacing the hard drive .
5 Replace the base cover .
6 Replace the battery .
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