Dell Optiplex(980 - System Setup; Boot Menu; Navigation Keystrokes; Entering System Setup

Dell Optiplex 980
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1. Drive activity light
2. Network activity light
3. Wireless internet activity light
4. Diagnostic lights (4)
5. Power button, power light
6. Optical drive
7. Optical drive eject button
8. Optical drive filler panel
9. Flex bay
10. USB 2.0 connectors (4)
11. Headphone connector
12. Microphone connector
13. Padlock ring
14. Security cable slot
15. Power cable connector
16. Back panel connectors
17. Expansion card slots (4)
18. Power supply diagnostic button
19. Power supply diagnostic light