Toshiba Satellite U400/U400D Laptop User Manual


 
E-2 User’s Manual
Legal Footnotes
use of computer at temperatures outside the range of 5°C to 30°C (41°F
to 86°F) or >25°C (77°F) at high altitude (all temperature references are
approximate and may vary depending on the specific computer model -
please refer to your computer documentation or visit the TOSHIBA
website at http://www.pcsupport.toshiba.com for details).
CPU performance may also vary from specifications due to design
configuration.
Under some conditions, your computer product may automatically
shutdown. This is a normal protective feature designed to reduce the risk of
lost data or damage to the product when used outside recommended
conditions. To avoid risk of lost data, always make back-up copies of data
by periodically storing it on an external storage medium. For optimum
performance, use your computer product only under recommended
conditions. Read additional restrictions in your product documentation.
Contact TOSHIBA technical service and support, refer to TOSHIBA support
section in Chapter 9 Troubleshooting for more information.
64-Bit Computing.
64-bit processors are designed to take advantage of 32 and 64 bit
computing.
64-bit computing requires that the following hardware and software
requirements are met:
64-bit Operating System
64-bit CPU, Chipset and BIOS (Basic Input/Output System)
64-bit Device drivers
64-bit applications
Certain device drivers and/or applications may not be compatible with a 64-
bit CPU and therefore may not function properly. A 32-bit version of the
operating system is preinstalled on your computer unless explicitly stated
that the operating system is 64-bit.
Memory (Main System)
Part of the main system memory may be used by the graphics system for
graphics performance and therefore reduce the amount of main system
memory available for other computing activities. The amount of main
system memory allocated to support graphics may vary depending on the
graphics system, applications utilized, system memory size and other
factors. For PC’s configured with 4 GB of system memory, the full system
memory space for computing activities will be considerably less and will
vary by model and system configuration.