Is buying a used computer a good idea? Does the company you buy from really matter? Is the financial strength of that company important? If you're thinking about buying used computer equipment, you probably have a lot of questions. At CDI, we welcome the opportunity to tell people what makes CDI-Certified the best. So take a minute to browse the following pages where you can learn more about CDI, hear what other customers have to say, and find out why the answers to those first three questions are yes, yes and yes.