Dell Precision M4400 (Mid 2008) - Manual (Page 10)

10
About Your Computer
computer or cause a fire. The computer turns on the fan when the computer gets
hot. Fan noise is normal and does not indicate a problem with the fan or the
computer.
Battery Removal
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions that shipped with your computer.
CAUTION:
Using an incompatible battery may increase the risk of fire or
explosion. Replace the battery only with a compatible battery purchased from
Dell. The battery is designed to work with your Dell™ computer. Do not use a
battery from other computers with your computer.
CAUTION:
Before removing or replacing the battery, turn off the computer,
disconnect the AC adapter from the electrical outlet and the computer, disconnect
the modem from the wall connector and computer, and remove any other external
cables from the computer.