Dell Inspiron 1521 Owner's Manual page 184

Environmental
Temperature range:
Operating
Storage
Relative humidity (maximum):
Operating
Storage
Maximum vibration (using a random
vibration spectrum that simulates
user environment):
Operating
Storage
Maximum shock (Measured with
hard drive in operating status and a
2-ms half-sine pulse for operating.
Also measured with hard drive in
head-parked position and a 2-ms
halfsine pulse for storage):
Operating
Storage
Altitude (maximum):
Operating
Storage
184
Specifications
0° to 35°C (32° to 95°F)
–40° to 65°C (–40° to 149°F)
10% to 90% (noncondensing)
5% to 95% (noncondensing)
0.66 GRMS
1.3 GRMS
142 G
163 G
–15.2 to 3048 m (–50 to 10,000 ft)
–15.2 to 10,668 m (–50 to 35,000 ft)