Toshiba Satellite C640 - Manual (Page 51)

User’s Manual 3-7
Satellite C600/C640/C645/C600D/C640D/C645D, Satellite Pro C600/C640/C600D/C640D
HDD automatic
power off
*1
This feature automatically cuts off power to the
hard disk drive when it is not accessed for a
specified time, with power being restored when
the hard disk drive is next accessed. This can be
specified in the Power Options.
System automatic
Sleep/Hibernation
Mode
*1
This feature automatically shuts down the system
into either Sleep Mode or Hibernation Mode when
there is no input or hardware access for a specified
time. This can be specified in the Power Options.
Power on password Two levels of password security, supervisor and
user, are available to prevent unauthorized
access to your computer.
Instant security A specific hot key function automatically locks the
system providing data security.
Intelligent power
supply
*1
A microprocessor in the computer’s intelligent
power supply detects the battery’s charge,
automatically calculates the remaining battery
capacity and protects electronic components
from abnormal conditions such as a voltage
overload from the AC adaptor. This can be
specified in the Power Options.
Battery save mode *1 This feature lets you configure the computer in
order to save battery power. This can be
specified in the Power Options.
Panel power on/off *1 This feature automatically turns power to the
computer off when the display panel is closed,
and turns it back on when the display panel is
opened. This can be specified in the Power
Options.
Low battery
automatic
Hibernation Mode
*1
When battery power is exhausted to the point that
computer operation cannot be continued, the
system automatically enters Hibernation Mode
and shuts itself down. This can be specified in the
Power Options.
Heat dispersal *1 To protect against overheating, the processor has
an internal temperature sensor so that, if the
computer’s internal temperature rises to a certain
level, the cooling fan is turned on or the
processing speed is lowered. This can be
specified in the Power Options.
Maximum Performance: Turns on fan first, then
if necessary lowers CPU processing speed.
Battery Optimized: Lowers the CPU processing
speed first, then if necessary turns on the fan.