System Board Components - Dell Precision Tower 3420 Owner's Manual

5. Install the:
a. PCIe SSD
b. memory moudle
c. system fan
d. heat sink
e. heat sink fan cover
f. optical drive
g. hard drive
h. front bezel
i. cover
6. Follow the procedure in

System board components

Figure 1. Components of the system board
1. PCI Express x16 Gen 3 slot
3. USB 2.0 with network connector
5. PS2 keyboard/mouse connectors
7. 2 x DisplayPort connector
9. Line-Out connector
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After Working Inside Your Computer.
2. PCI Express x4 slot
4. USB 3.0 connector
6. serial port connector
8. HDMI connector
10. P2 power connector