Dell Precision Tower 3420 Owner's Manual page 47

Feature
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
PCI Express x16 (wired as x4) data width (maximum) - four PCI Express lanes
Mini-Tower
Specification
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
Rear Panel: two
Front Panel: two
Rear 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
one 164-pin connector
PCIe drive bay
one
one
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