3-2 User’s Manual
TECRA A10/S10/M10/SatellitePro S300
Memory
Power 
Memory slots 512, 1,024, 2,048 or 4,096MB memory modules 
can be installed in the computer’s two memory 
slots for a maximum of 8,192MB system memory.
This computer can be equipped with memory 
modules of a maximum size of 8,192MB. The 
actual amount of useable system memory will be 
less than the installed memory modules.
Video RAM The memory in a computer’s graphics adaptor, 
used to store the image displayed on a bitmap 
display.
The amount of Video RAM available is 
dependent on the computer’s system memory.
Start -> Control Panel -> Appearance and 
Personalization -> Personalization -> Display 
Settings.
The amount of Video RAM can be verified by 
clicking the Advanced Settings... button in the 
Display Settings window.
If your computer is configured with two 2 GB memory modules or more, the 
memory might be displayed as approximately 3 GB only (depending on the 
computer’s hardware specifications). 
This is correct because the operating system usually displays the available 
memory instead of the physical memory (RAM) built into the computer. 
Various system components (like the video adapter’s GPU and PCI 
devices like Wireless LAN, etc.) require their own memory space. Since a 
32-bit operating system cannot address more than 4 GB of memory these 
system resources overlap the physical memory. It is a technical limitation 
that the overlapped memory is not available to the operating system. 
Even though some tools might display the actual physical memory built 
into your computer, the memory available to the operating system will still 
be approximately 3 GB only.
Legal Footnote (Memory (Main System))*3
For more information regarding Memory (Main System), please refer to the 
Legal Footnotes section in Appendix H or click the *3 above.
Battery pack The computer is powered by one rechargeable 
lithium-ion battery pack.