Dell OptiPlex 7040-Small Form Factor Owner's Manual page 48

Table 25. System information
Feature
System chipset
DMA channels
Interrupt levels
BIOS chip (NVRAM)
Table 26. Expansion bus
Feature
Bus type
Bus speed
Table 27. Cards
Feature
PCI express x4
PCI express x16
Table 28. Drives
Feature
Externally accessible (5.25-inch drive bays)
Optical drive
Table 29. External connectors
Feature
Audio
Front panel
Back panel
Network adapter
Serial
Parallel
USB 2.0
USB 3.0
Video
Keyboard and mouse
48 Specifications
Specification
Intel 100 series, Q170
Two 8237 DMA controllers with seven independently programmable
channels
Integrated I/O APIC capability with 24 interrupts
16 MB
Specification
PCIe gen3 (x16), USB 2.0, and USB 3.0
PCI Express:
● x4-slot each direction speed – up to 3.94 GB/s
● x16-slot each direction speed–16 GB/s
SATA: 1.5 Gbps, 3.0 Gbps, and 6 Gbps
Specification
Half height card
Half height card
Specification
Two
One
Specification
Universal Audio Jack
Line out connector
RJ-45 connector
9-pin connector; 16550 C compatible
25-pin connector (optional)
● Front panel: two
● Back panel: two
● Front panel: two
● Back panel: four
● 19-pin HDMI connector
● Two 20-pin DisplayPort connectors
● 15-pin VGA connector (optional)
NOTE: Available video connectors may vary based on the
graphics card selected.
Back panel:
● PS2 Keyboard 6-pin connector