Dell XPS/Dimension XPS Gen 4 - Manual (Page 10)

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Power
DC power supply:
Wattage 460 W
Heat dissipation 931.2 BTU/hr
Voltage (See the safety instructions located in
the Product Information Guide for important
voltage setting information.) fixed-voltage power supply — 110 V at 50/60 Hz
manual selection and auto-sensing power supplies —
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 lithium coin cell
Physical
Height 49.1 cm (19.3 inches)
Width 22.2 cm (8.7 inches)
Depth 48.8 cm (19.2 inches)
Weight 19 kg (42 lb)
Environmental
Temperature:
Operating 10° to 35°C (50° to 95°F)
NOTE: At 35°C (95°F), the maximum operating
altitude is 914 m (3000 ft).
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 0.5 octave/min
Storage 0.5 G at 3 to 200 Hz at 1 octave/min
Maximum shock:
Operating bottom half-sine pulse with a change in velocity of 20
inches/sec (50.8 cm/sec)
Storage 27-G faired square wave with a velocity change of
200 inches/sec (508 cm/sec)
Altitude:
Operating – 15.2 to 3048 m (–50 to 10,000 ft)
Storage – 15.2 to 10,668 m (–50 to 35,000 ft)