Dell Latitude E7270 Owner's Manual

Installing the system board

Align the system board with the screw holders on the computer.
Place the metal bracket over the memory module connectors and tighten the screws to secure it to the computer.
Tighten the screws to secure the system board to the computer.
Connect the speaker, power connector, LED, touchpad, and system board cables to the connectors on the system board:
Connect the display assembly cable to the connector on the system board.
Place the metal bracket over the display assembly cable and tighten the screw to secure it.
Install the:
Follow the procedure in After working inside your computer .