Dell Vostro 3550 (Early 2011) - Manual (Page 49)

10. Lift up the fingerprint-reader board and remove.
Installing The Fingerprint Reader
1. Affix the fingerprint-reader cable to the palm rest.
2. Tighten the screw securing the fingerprint-reader bracket.
3. Install the palm rest .
4. Install the keyboard .
5. Install the access panel .
6. Install the battery .
7. Follow the procedures in After Working Inside Your Computer .
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