Dell Vostro 330 (Early 2011) - Manual (Page 62)

Installing The Processor
1. The processor is notched at one end with a triangle marking. The same
marking is also notched on the processor socket. Align these two notches
and slide the processor into the socket and it should slide in nicely and fit
into the socket without any force.
2. Lock the processor into the socket by turning the screw clockwise until it
clicks into the locked position.
3. Replace the processor heat sink .
4. Replace the processor fan .
5. Replace the video card fan .
6. Replace the video card and heat sink assembly .
7. Replace the system board shield .
8. Replace the front stand .
9. Replace the cover .
10. Follow the procedures in After Working Inside Your Computer .
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