Dell Vostro 360 (Late 2011) - Manual (Page 58)

Installing The CPU Heatsink
1. Place the CPU heatsink into the chassis.
2. Tighten the screws to secure the CPU heatsink to the system board, and also
tighten the screw that secures the heatsink to the chassis.
3. Install the CPU fan .
4. Install the system board shield .
5. Install the rear stand cover .
6. Install the rear I/O cover .
7. Install the rear stand .
8. Install the rear cover .
9. Follow the procedures in After Working Inside Your Computer .
58