Dell Latitude 9520 2-in-1 - I;O daughter board

Steps
1. Route the I/O daughter board cable on the routing channels on to the system fan.
2. Connect the I/O daughter board cable to the I/O daughter board, and system board.
3. Reconnect the battery cable to the connector on the system board.
Next steps
1. Install the base cover.
2. Install the SIM card tray.
3. Install the microSD card.
4. Follow the procedure in After working inside your computer .
I/O daughter board
Removing the I/O daughter board
Prerequisites
1. Follow the procedure in before working inside your computer.
2. Remove the microSD card.
3. Remove the SIM card tray.
4. Enter service mode.
5. Remove the base cover.
6. Remove the system board.
7. Remove the I/O daughter board cable.
About this task
The following image indicates the location of the I/O board and provides a visual representation of the removal procedure.
Removing and installing components
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