Place the speaker module into the slots on the system.
Route the speaker cable through the retention clips on the system.
NOTE For Latitude 7490, the speaker cable must be routed correctly in the routing channels on the palm-rest and the routing channels along the bottom edge of the touchpad buttons. Now, using the piece of tape attached to the speaker cable, secure it to the touchpad buttons
Connect the speaker cable to the connector on the system board.
Connect the battery cable to the connector on the system board.