Dell OptiPlex 7020 (Mid 2014) - Manual (Page 57)

Table 26. Controls and Lights
Feature Specification
Front of the computer:
Power button light White light — Solid white light indicates power-on state;
blinking white light indicates sleep state of the
computer.
Drive activity light White light — Blinking white light indicates that the
computer is reading data from or writing data to the
hard drive.
Back of the computer:
Link integrity light on integrated network
adapter Green — a good 10 Mbps connection exists between the
network and the computer.
Green — a good 100 Mbps connection exists between
the network and the computer.
Orange — a good 1000 Mbps connection exists between
the network and the computer.
Off (no light) — the computer is not detecting a physical
connection to the network.
Network activity light on integrated
network adapter Yellow light — A blinking yellow light indicates that
network activity is present.
Power supply diagnostic light 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.
Table 27. Power
NOTE: Heat dissipation is calculated by using the power supply wattage rating.
Power Wattage Maximum Heat
Dissipation
Voltage
Mini-Tower 290 W 989.00 BTU/hr 100 VAC to 240 VAC, 50 Hz
to 60 Hz, 5 A
Small Form Factor 255 W 870.00 BTU/hr 100 VAC to 240 VAC, 50 Hz
to 60 Hz, 4.4 A
Coin-cell battery 3 V CR2032 lithium coin cell
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