Dell Precision 3440 Small Form Factor Service Manual page 55

Steps
1. Align and lower the system board into the system until the connectors at the back of the system board align with the slots on the
chassis, and the screw holes on the system board align with the standoffs on the system.
2. Replace the four screws (6-32) and the single standoff screw (M2x4) screw to secure the system board to the chassis.
3. Align and lower the I/O panel into the slot on the system chassis.
4. Replace the screws (6-32) to secure the I/O panel to the system chassis.
5. Reconnect the intrusion switch cable to the connector on the system board.
6. Reconnect the system board power supply cables to the connector on the system board.
7. Reconnect the power button switch cable to the connector on the system board.
8. Reconnect the system fan cable to the connector on the system board.
9. Reconnect the processor power supply cable to the connector on the system board.
10. Reconnect the SATA cables to the connectors on the system board.
11. Reconnect the SATA power cable to the connector on the system board.
12. Reconnect the internal speaker cables to the connector on the system board.
Next steps
1. Install the processor.
2. Install the memory modules.
3. Install the heat-sink.
4. Install the WLAN card.
Disassembly and reassembly 55