Book Description: With the explosion of PC sales to consumers in the past several years, the market for upgrades and add-on devices is hot. This book focuses on upgrades and add-ons that any consumer level user can make with their PC. It uses the highly visual layout of the How to Use series combined with the look of the incredibly successful How It Works series to make upgrading a snap. It goes beyond most hardware books by addressing more than just the nuts, bolts, and techie connections of hardware. How to Expand & Upgrade PCs, Second Edition is for the millions of casual computer users who use computers at home or in a business setting where they perform their own hardware upgrades. This book is not for "hard core" hardware techies, but rather the consumer upgrading market looking to make occasional simple upgrades to increase the functionality, use, and even enjoyment they get from their PC.