These machines are essentially a small laptop with a few tradeoffs. You give up screen size, computing power and DVD drive for a lighter weight, extended battery life and portability. These are a perfect fit for those interested in web surfing, email and basic word processing.

These usually are the lowest priced computers that you can find. Features and specs will probably less than what is currently out, but this is offset by the price. They will probably have some surface wear.

These are usually customer returns or units that went off lease. These will have a warranty that is slightly extended and rate closer in specs to what is currently out on retail shelves.

These machines are produced by major manufacturers and come with the standard 1 year warranty. They are higher in price, but you get some of the latest technology and features. They will be the lightest and typically the most powerful.