Dell Vostro 3470 - Component Removal and Installation; Required Tools and Screw Identification

System back view
1 Line-in port 2 Line-out port
3 Microphone port 4 VGA port
5 HDMI port 6 USB 2.0 ports (4)
7 Service tag 8 Expansion card slots
9 Power connector port 10 Power diagnostics light
11 Power supply diagnostics button 12 Kensington security slot
13 Network port 14 Padlock ring
10 Chassis