Dell OptiPlex 3020 Owner's Manual page 58

Table 19. Audio
Feature
Integrated
Table 20. Network
Feature
Integrated
Table 21. System Information
Feature
System chipset
DMA Channels
Interrupt Levels
BIOS Chip (NVRAM)
Table 22. Expansion Bus
Feature
Bus Type
Bus Speed:
Table 23. Drives
Feature
Externally accessible:
Internally accessible
Table 24. External Connectors
Feature
Audio
Front Panel
Back Panel
Network Adapter
Serial
Parallel
USB
58
Specification
Realtek ALC3220 High Definition Audio, Line in(MIC)/Line
out port on rear side and MIC/HP on front I/O side
Specification
Realtek RTL8151GD GIGABIT ETHERNET LAN 10/100/1000
Specification
Intel H81 Chipset
Seven Programmable Channels
64Mbit (8MB)
Specification
PCIex16 *1/PCIex1
PCIex16 support Gen2 5Gbps/PCIex1 support gen 2 5Gbps
Specification
ODD is externally accessible
HDD is internally accessible
Specification
Line in(MIC)/Line out port on rear side and MIC/HP on front
I/O side
USB2.0 *2 and MIC*1 /HP *1 supported on front panel
VGA *1/DP*1/RJ45*1/USB3.0*2/USB2.0*4/Line in(MIC) *1/
Line out *1
support Broadcom NetXtreme 10/100/1000 PCIe Gigabit
Networking Card
support Serial / PS/2 Add-in Bracket or Serial / Parallel Port
PCIe Add-in Card
Serial / Parallel Port PCIe Add-in Card
USB 2.0 (Front / Rear / Internal) is 2 /4 /0 and USB 3.0
(Front / Rear / Internal) is 0 / 2 / 0