Dell OptiPlex 9020 All In One (Mid 2013) - Manual (Page 10)

9. WLAN card
10. speakers
11. input/output (I/O) board shield
12. power-supply fan
13. power-supply fan bracket
14. intrusion switch
15. converter board
16. power-button and on-screen display (OSD) buttons
board
17. optical drive
Removing the VESA Stand
1. Follow the procedures in Before Working Inside Your Computer .
2. Place the computer on a flat surface, display side facing downwards.
3. Using a plastic scribe, release the cover starting with the notches at the bottom.
NOTE: To avoid damaging the VESA stand cover, handle the plastic scribe with care.
4. Slide and lift the VESA cover upwards and away from the computer.
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