Dell Vostro 1440 (Mid 2011) - Manual (Page 44)

Installing The Processor
1. Insert the processor into the processor socket. Ensure the processor is
properly seated.
2. Tighten the cam-screw in a clockwise direction to the locked position.
3. Install the
CPU fan assembly and the heatsink .
4. Install the palm rest .
5. Install the keyboard .
6. Install the battery .
7. Follow the procedures in After Working Inside Your Computer .
44