Installing the system board
If you are replacing a component, remove the existing component before performing the installation procedure.
The following image indicates the connectors on your system board.
Figure 1. System-board connectors![Image: System board connectors](https://dl.dell.com/content/guides/public/Html/inspiron-7706-2n1-service-manual/images/GUID-4DC2069A-826A-453B-A6BF-7691EFD2739B-low.jpg)
- Power-adapter port cable
- Display cable
- Fan cable
- I/O-board cable
- Speaker cable
- Touchpad cable
- Keyboard cable
- USB Type-C port bracket
The following image indicates the location of the system board and provides a visual representation of the installation procedure.
![Image: Installing the system board 1](https://dl.dell.com/content/guides/public/Html/inspiron-7706-2n1-service-manual/images/GUID-1EE0EE2C-361E-44B0-84D5-C5FBEEB895C4-low.jpg)
![Image: Installing the system board 2](https://dl.dell.com/content/guides/public/Html/inspiron-7706-2n1-service-manual/images/GUID-113AFB18-9011-4A82-BACA-DE01DF0BAFF2-low.jpg)
- Align and place the system board on the palm-rest and keyboard assembly.
- Replace the screws (M2x3.5) that secures the system board to the palm-rest and keyboard assembly.
- Replace the screws (M2x2) that secures the system board to the palm-rest and keyboard assembly.
- Connect the display cable to the connector on the system board and close the latch to secure the cable.
- Adhere the tape that secures the display cable to the system board.
- Connect the power-adapter port cable to the connector on the system board.
- Connect the keyboard cable to the connector on the system board and close the latch to secure the cable.
- Connect the keyboard-backlit cable into the connector on the system board and close the latch to secure the cable.
- Connect the touchpad cable to the connector on the system board and close the latch to secure the cable.
- Connect the speaker cable to the system board.
- Connect the I/O-board cable to the connector on the system board and close the latch to secure the cable.
- Adhere the tape that secures the I/O-board cable to the system board.
- Connect the fan cable to the system board.
- Align the screw holes on the USB Type-C port bracket with the screw holes on the system board.
- Replace the two screws (M2x3.5) that secure the USB Type-C port bracket to the system board.
- Adhere the tape that secures the USB Type-C port bracket to the system board.
- Close the right display hinge.
- Replace the three screws (M2.5x4.5) that secure the right display hinge to the system board.
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