Dell Vostro 3350 (Early 2011) - Manual (Page 91)

Installing The System Board
1. Align the system board to the port connectors on the rear of the chassis
and place the system board in the computer.
2. Tighten the screws to secure the system board in place.
3. Replace the fan cable.
4. Tighten the screws to secure the heatsink to the system board.
5. Install the
display assembly .
6. Install the palm rest .
7. Install the WWAN card .
8. Install the keyboard .
9. Install the hard drive .
10. Install the optical drive .
11. Install the WLAN card .
12. Install the memory .
13. Install the access panel .
14. Install the memory card .
15. Install the battery .
16. Follow the procedures in After Working Inside Your Computer .
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