Sony VAIO PCG-R505ELK User Manual page 88

Typical expansion memory configuration
Total System Memory (MB)
256
384
512
1
T he 5 1 2 M B memory c onfiguration may require the removal and replac ement of original fac tory-ins talled memory module.
1
On board (MB)
256
256
256
Slot (MB)
0
128
256
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