Apple iMac (21.5 and 27-inch, Late 2009) - Manual (Page 66)

66 Chapter 5 Last, but Not Least
Important Handling Information
Operating environment Operating your iMac outside these ranges may affect
performance:
 Operating temperature: 50° to 95° F (10° to 35° C)
 Storage temperature: -4° to 116° F (-20° to 47° C)
 Relative humidity: 5% to 95% (noncondensing)
 Maximum operating altitude: 10,000 feet (3048 meters)
Turning on your iMac Never turn on your iMac unless all of its internal and external
parts are in place. Operating the computer when parts are missing may be dangerous
and may damage your computer.
Carrying your iMac Before you lift or reposition your iMac, shut it down and
disconnect all cables and cords connected to it. To lift or move your iMac, hold its sides.
Using connectors and ports Never force a connector into a port. When connecting
a device, make sure the port is free of debris, that the connector matches the port,
and that you have positioned the connector correctly in relation to the port.
NOTICE: Failure to follow these handling instructions could result in damage to your
iMac or other property.