Dell Dimension 4550 - Manual (Page 109)

Appendix 109
Power
DC power supply:
Wattage 250 W
Heat dissipation 853 BTU (fully loaded computer without
monitor)
Voltage (see page 11 for important
voltage setting information)
90 to 135 V at 50/60 Hz; 180 to 265 V at
50/60 Hz; 100 V at 50/60 Hz for Japanese
computers
Backup battery 3-V CR2032 coin cell
Physical
Height x Width x Depth
42.5 x 18.1 x 44.7 cm
(16.7 x 7.1 x 17.6 inches)
Weight 12.7 kg (28 lb)
Environmental
Temperature:
Operating 10° to 35°C (50° to 95°F) 2
Storage –40° to 65°C (–40° to 149°F)
Relative humidity 20% to 80% (noncondensing)
Maximum vibration:
Operating 0.25 G at 3 to 200 Hz at 1/2 octave/min
Storage 0.5 G at 3 to 200 Hz at 1/2 octave/min
Maximum shock:
Operating bottom half-sine pulse with a change in
velocity of 50.8 cm/sec (20 inches/sec)
Storage 23-G faired-square wave with a velocity
change of 508 cm/sec (200 inches/sec)
Altitude:
Operating –15.2 to 3048 m (–50 to 10,000 ft) 2
Storage –15.2 to 10,670 m (–50 to 35,000 ft)
2
At 35°C (95°F), the maximum operating altitude is 914 m (3000 ft).