Dell Vostro 3750 (Early 2011) - Manual (Page 116)

12. Remove the DC-in port from the bottom base.
Installing The DC-in Port
1. Tighten the screw to secure the DC-in port.
2. Install the
display assembly .
3. Install the WLAN card .
4. Install the hinge cover .
5. Install the palm rest .
6. Install the optical drive .
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