Dell Vostro 3555 (Mid 2011) - Manual (Page 91)

Installing The Left And The Right Input/Output (I/O) Board
1. Install the left and the right I/O board.
2. Install the system board .
3. Install the display assembly .
4. Install the ExpressCard board .
5. Install the hold switch .
6. Install the WLAN card .
7. Install the palm rest .
8. Install the keyboard .
9. Install the WWAN card .
10. Install the hard drive .
11. Install the optical drive .
12. Install the memory module .
13. Install the access panel .
14. Install the ExpressCard .
15. Install the memory card .
16. Install the battery .
17. Follow the procedures in After Working Inside Your Computer .
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