Dell Vostro 3902 Mini Tower (Late 2013) - Manual (Page 16)

3. Follow the steps to remove the expansion card:
a. Press the blue tab and slide down the release lever that secures the expansion card.
b. Press on the retaining tab to release the expansion card from its connector.
c. Lift the expansion card up out of its connector and remove it from the computer.
d. Repeat the same sequence of steps to remove any additional expansion card installed.
Installing the Expansion Card(s)
1. Place the expansion card in its connector.
2. Secure the expansion card by pushing the card-retention latch until it snaps into place.
3. Repeat the steps to install any additional expansion cards.
4. Install the cover.
5. Follow the procedures in After Working Inside Your Computer.
Removing The Power Supply Unit (PSU)
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the:
• cover
• bezel
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