Dell OptiPlex Micro 7010 Owner's Manual page 51

Steps
1. Place the fan on the fan shroud.
2. Align the tabs on the fan with the slots on the fan shroud.
3. Snap the fan into place on the fan shroud.
4. Connect the fan cable to the system board.
5. Flip over the fan assembly.
6. Press and hold the tabs on the fan assembly.
7. Place the fan assembly into the slot on the system board and release the tabs.
8. Press and hold on the tab that secures the speaker to the system board.
9. Place the speaker on the system board.
10. Release the tab that secures the speaker to the system board.
Next steps
1. Install the speaker.
2. Install the side cover.
3. Follow the procedure in After working inside your computer.
Removing and installing Customer Replaceable Units (CRUs) 51