Dell Studio Desktop D540 (Late 2008) - Manual (Page 53)

51
Specifications
Power
DC Power Supply
Wattage
300 W/350 W
NOTE: The 300 W power supply will be used in
Energy star systems.
Maximum heat
dissipation
75 W (300 W PSU)
188.5 W (350 W PSU)
NOTE: Heat dissipation is calculated by using
the power supply wattage rating.
Voltage
115/230 VAC,
50/60 Hz, 7.0 A/4.0 A
Coin‑cell battery 3‑V CR2032 lithium
coin cell
Computer Environment
Temperature ranges:
Operating
10° to 35°C
Storage – 40° to 70° C
Relative humidity
(maximum):
20% to 80%
(noncondensing)
Maximum vibration (using a random-vibration
spectrum that simulates user environment):
Operating
5 to 350 Hz at 0.0002
G2/Hz
Storage 5 to 500 Hz at 0.001 to
0.01 G2/Hz