Dell Precision M4300 (Mid 2007) - Manual (Page 139)

Specifications
137
Storage 163 G
Altitude (maximum):
Operating –15.2 to 3048 m (–50 to 10,000 ft)
Storage –15.2 to 10,668 m (–50 to 35,000 ft)
Airborne contaminant level G2 or lower as defined by ISA-S71.04-1985
Environmental (continued)