Dell Vostro 3750 (Early 2011) - Manual (Page 96)

19. Lift and remove the system board from the chassis.
Installing The System Board
1. Install all the cables to the system board.
2. Install the screws securing the system board to the base of the computer.
3. Replace the speaker cable and the sub-woofer cables.
4. Install the
ExpressCard cable .
5. Install the system fan .
6. Install the display assembly .
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