Dell XPS 12 (9Q23, Late 2012) - Manual (Page 33)

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 You Begin" on
page 7. After working inside your computer, follow the instructions in
"After Working Inside Your Computer" on page 9. For additional safety best
practices information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Prerequisites
1 Remove the base cover. See "Removing the Base Cover" on page 10.
2 Remove the battery. See "Removing the Battery" on page 13.
Procedure
1 Using the pull tab disconnect the I/O-board cable.
2 Disconnect the speakers cable from the I/O board.
Removing the I/O Board | 33