Dell Inspiron 640M Owner's Manual page 163

Environmental (continued)
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 half-
sine pulse for storage):
Operating
Storage
Altitude (maximum):
Operating
Storage
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)
163
Specifications