Sony VGC-RA825GY - Manual (Page 71)

About Add-on Card Installation
Your computer may have one or more open expansion slots, depending on the model configuration. An expansion slot
enables you to install add-on cards to expand the functionality of your computer. The length of the add-on card should not
exceed 9.05 inches.
Add-on card configuration varies by model. Some models, such as Configure-to-Order (CTO) computers, may have all
expansion slots filled.
Observe the proper safety precautions when you add cards to your Sony computer. See Before upgrading your
computer .
Page 71