Dell OptiPlex 7020 Owner's Manual page 53

Table 19. Network
Feature
Integrated
Table 20. System Information
Feature
System chipset
DMA Channels
Interrupt Levels
BIOS Chip (NVRAM)
Table 21. Expansion Bus
Feature
Bus Type
Bus Speed
Table 22. Cards
Feature
PCI:
Mini-Tower
Small Form Factor
PCI Express x1:
Mini-Tower
Small Form Factor
PCI-Express x16:
Mini-Tower
Small Form Factor
Table 23. Drives
Feature
Externally Accessible (5.25-inch drive bays):
Mini-Tower
Specification
Intel I217LM Ethernet capable of 10/100/1000 Mb/s
communication
Specification
Intel 8 series Express chipset
two 8237 DMA controllers with seven independently
programmable channels
Integrated I/O APIC capability with 24 interrupts
12 MB
Specification
PCIe gen2, gen3 (x16), USB 2.0, and USB 3.0
PCI Express:
• x1-slot each direction speed –500 MB/s
• x16-slot each direction speed–16 GB/s
SATA: 1.5 Gbps, 3.0 Gbps, and 6 Gbps
Specification
up to one full-height card
none
up to three full-height cards
up to two low-profile cards
up to two full-height cards
up to two low-profile cards
Specification
two
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