The concept Dell XCS PC features a modular design that lets you snap modular parts. The design is based on the fact that most users don't want to open up their computer to add components. Plus, it looks pretty cool.
Implications - For the computer user who might not necessarily have a great deal of technical proficiency or knowledge, a product like this would definitely be appealing. By making it easy and convenient to upgrade or change even their most complicated products, companies can appeal to a wider swathe of customers than a less user-friendly product might otherwise have done. The more intuitive your design, the bigger the audience it can service.