Sony PCV-RX560 - Vaio Desktop Computer Online Help 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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