Back View - Dell Precision 5820 Tower Owner's Manual

Back view

1. PSU BIST LED
3. Microphone /Line-in port
5. Serial port
7. PS/2 Keyboard port
9. USB 3.1 Gen1 ports
11. PCIe expansion slot
8 Chassis
2. Power cable connector
4. Line-out port
6. PS/2 Mouse port
8. Network port
10. USB 3.1 Gen1 port(supports smart Power-On)