Dell Precision Tower 3420 Owner's Manual page 49

Table 27. Drives
Feature
Externally accessible (5.25-inch drive bay)
Mini Tower
Small Form Factor
Internally accessible
Mini Tower
Small Form Factor
Table 28. External connectors
Feature
Audio
Front panel
Back panel
Network adapter
Serial
USB 2.0
USB 3.0
HDMI out
Video
Table 29. Internal connectors
Feature
PCI 2.3 data width (maximum) - 32 bits
Mini Tower
Small Form Factor
PCI Express x4 data width (maximum) - four PCI Express lane
Mini Tower
Small Form Factor
Specification
Two
One slim optical drive bay
3.5-inch SATA drive 2.5-inch SATA drive
bays bays
Two Four
One Two
Specification
One universal audio jack with microphone in and
headphone connector
One line-out connector
One RJ-45 connector
One 9-pin connector; 16550 C compatible
Front panel: two
Back panel: two
Front panel: two
Back panel: four
One
• 15-pin VGA connector
• two 20-pin DisplayPort connectors
NOTE: Available video connectors may vary based
on the graphics card selected.
Specification
One 120-pin connector
None
One 64–pin connector
One 64–pin connector
PCIe drive bay
One
One
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