Steps
1. Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly.
2. Replace the five screws (M2x2) and the two screws (M2x3) that secure the system board to the palm-rest and keyboard assembly.
3. Connect the hard-drive cable, the touchpad cable, the keyboard-backlight cable, and the keyboard cable to their respective
connectors on the system board and close the respective latches.
4. Connect the coin-cell battery cable and the speaker cable to the connectors on the system board.
5. Connect the power-adapter port cable to the system board and close the latch.
6. Connect the I/O-board cable to the system board and close the latch.
Next steps
1. Install the display assembly.
2. Install the heat sink (for integrated graphics) or the heat sink (for discrete graphics).
3. Install the wireless card.
4. Install the memory module.
5. Install the solid-state drive/Intel Optane memory.
6. Install the battery.
7. Install the base cover.
8. Follow the procedure in After working inside your computer.
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Removing and installing components