Dell OptiPlex 3040M Series Owner's Manual page 41

Table 29. External connectors
Feature
Audio:
Front panel
Network adapter
Serial
USB 2.0 (front/back/internal)
USB 3.0 (front/back/internal)
Video
NOTE: Available video connectors may vary based on the optional graphic board selected.
Table 30. Controls and lights
Feature
Front of the computer:
Power button light
Drive activity light
Back of the computer:
Link integrity light on integrated
network adapter
Network activity light on integrated
network adapter
Power supply diagnostic light
Specification
• Universal headset
• Line out connector
RJ-45 connector
PS2 and serial connector (optional)
0/2/1
2/2/0
• 15-pin VGA connector (optional)
• 20-pin DisplayPort connector
• 19-pin HDMI connector
Specification
White light — Solid white light indicates power-on state;
slow blinking white light indicates sleep state of the
computer.
White light — Slow blinking white light indicates that the
computer is reading data from or writing data to the hard
drive.
Green — A 10 Mbps connection exists between the
network and the computer.
Green — A 100 Mbps connection exists between the
network and the computer.
Orange — A 1000 Mbps connection exists between the
network and the computer.
Off (no light) — The computer is not detecting a physical
connection to the network.
Yellow light — A breathing yellow light indicates that
network activity is present.
Green light — The power supply is turned on and is
functional. The power cable must be connected to the
power connector (at the back of the computer) and the
electrical outlet.
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