Dell Precision 3240 Compact - Heatsink Removal and Installation

Steps
1. Insert a flat-head screwdriver in the hole of the bracket for optional I/O module.
2. Push the bracket to release the bracket from the system chassis.
3. Connect the I/O card cable to the connector on the system board.
4. Insert the I/O card into its slot from the inside your system.
5. Use the two (M3x3) screws to secure the optional I/O card to the chassis.
NOTE: The screw type differs with the kind of I/O module used.
Next steps
1. Install the riser card.
2. Install the hard drive assembly.
3. Install the front bezel.
4. Install the top cover (side bezel).
5. Install the side cover.
6. Follow the procedure in after working inside your computer.
Coin-cell battery
Removing the coin-cell battery
Prerequisites
1. Follow the procedure in before working inside your computer.
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Disassembly and reassembly