Sony PCG-F570 Manual

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Adding Memory
In the future you may want to install memory modules to expand the 
functionality of your computer. You can increase memory up to 256 MB 
(128 MB x 2), by installing optional memory modules. For PCG-F580/
PCG-F580K/PCG-F590/PCG-F590K, 128 MB of memory are already 
installed (128 MB x 1). For PCG-F540/PCG-F540K/PCG-F560/
PCG-F560K/PCG-F570/PCG-F580/PCG-F580K, 64 MB of memory are 
already installed (64 MB x 1). You can add an expansion memory module 
in a slot. 64 MB and 128 MB expansion memory modules are available as 
optional memory modules. For memory upgrades, use only PC-100 
SDRAM SO-DIMM (gold lead contacts). 
 
The procedures described below assume familiarity with the general 
terminology associated with personal computers and with the safety 
practices and regulatory compliance required for using and 
modifying electronic equipment.
Disconnect the system from its power source and from any 
telecommunications links, networks, or modems before you open the 
system or follow any of the procedures described below. Failure to do 
so may result in personal injury or equipment damage.
The size of your memory may differ if you purchased a specially configured system.
!
Make sure you observe the proper safety precautions when you install memory 
modules in your computer. See the bulleted list below. Be careful when adding 
memory. Mistakes when installing or removing a memory module may cause a 
malfunction.