Dell
In addition, the company provides protection services, advisory services, multivendor hardware support, "how-to" support for software applications, collaborative support with many third-party vendors, and online parts and labor dispatching for customers who diagnose and troubleshoot their hardware. Dell also provides Dell ProSupport customers access to a crisis-center to handle major outages, or problems caused by natural disasters. Dell also provide on-line support by using the computer's service-tag that provides full list of the hardware elements installed originally, purchase date and provides the latest upgrades for the original hardware drivers.

Q: What kind of support does Dell provide using a computer's service-tag?
on-line support