Dell OptiPlex 3020 Owner's Manual page 60

Feature
Table 27. Power
Feature
Coin-cell battery
Voltage
Wattage
Maximum heat dissipation
NOTE: Heat dissipation is calculated by using the power supply wattage rating.
Table 28. Physical
Feature
Physical
Height
Width
Depth
Weight
Table 29. Environmental
Feature
Temperature:
Operating
Storage
Relative humidity (maximum):
Operating
Storage
Maximum vibration:
Operating
Storage
Maximum shock:
Operating
Storage
Altitude:
Operating
Storage
60
Specification
power connector (at the back of the computer) and the
electrical outlet.
Specification
3V Lithium CR2032
100 VAC to 240 VAC
255 W
N/A
Specification
8.38 liters
290 mm
92.6 mm
312 mm
5 Kgs
Specification
0 degree to 35 degree
'-40 degree to 65 degree
20 R.H. to 80 R.H.
20 R.H. to 95 R.H.
0.26Grms
1.37Grms
40G/2ms
50G/19ms
–15.2 m to 3048 m (–50 to 10,000 ft)
–15.20 m to 10,668 m (–50 ft to 35,000 ft)