Sony PCV-RX560 - Manual (Page 106)

To Add Memory
The computer may have available memory slots, depending on the system configuration purchased. For memory upgrades,
use only 3.3V 64-bit PC-133 SDRAM Dual Inline Memory Modules (DIMM).
Note:
You can purchase additional memory modules, accessories, and peripheral equipment from your local retailer.
Caution:
Observe the proper safety precautions when you add or remove memory in your Sony computer. See Upgrading the
computer system .
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