Apple PC Compatibility Card - Manual (Page 306)

Environment
Temperature
m Operating: 10° C to 35° C (50° F to 95° F)
m Non-operating: –40° C to 65° C (–40° F to 149° F) for 72 hours
Relative humidity
m Operating: 10% RH to 90% non-condensing
m Non-operating: 5% RH to 95% non-condensing
Altitude
m Operating: –1,000 to 10,000 feet (–304.8 m to 3,048 m)
m Non-operating: –1,000 to 40,000 feet (–304.8 m to 12,192 m)
306 Appendix E