Dell OptiPlex 9020 (Mid 2013) - Manual (Page 56)

Feature Specification
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, 5.4 A
Small Form Factor 255 W 870.00 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60
Hz, 4.6 A
Ultra Small Form Factor 200 W 682.40 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60
Hz, 2.9 A
Coin-cell battery 3 V CR2032 lithium coin cell
Table 28. Physical Dimension
Physical Height Width Depth Weight
Mini-Tower 36.00 cm (14.17 inches) 17.50 cm (6.89 inches) 41.70 cm (16.42 inches) 9.40 kg (20.72
lb)
Small Form Factor 29.00 cm (11.42 inches) 9.30 cm (3.66 inches) 31.20 cm (12.28 inches) 6.00 kg (13.22
lb)
Ultra Small Form
Factor 23.70 cm (9.33 inches) 6.50 cm (2.56 inches) 24.00 cm (9.45 inches) 3.30 kg (7.28 lb)
Table 29. Environmental
Feature Specification
Temperature range:
Operating 5 °C to 35 °C (41 °F to 95 °F)
Storage –40 °C to 65 °C (–40 °F to 149 °F)
Relative humidity (maximum):
56