10. Install the fan.
11. Install the speakers
12. Install the M.2 2230 solid state drive or M.2 2280 solid state drive, as applicable.
13. Install the WWAN.
NOTE: This procedure applies only to computers shipped with a WWAN card installed.
14. Install the battery.
15. Install the base cover.
16. Install the SIM card tray, if applicable.
17. Follow the procedure in after working inside your computer.
118 Removing and installing Field Replaceable Units (FRUs)