These settings can be changed via the Preferences dialog by going to Windows -- You can also manually check for updates, which is useful if you recently added a update site, repository or simply disabled the Automatic verification and prefers doing it at your own convenience. This will parse all the pre-configured update sites at the section Managing Update Sites/Server section below and bring up a list of available updates.
This list is very similar to what is shown when using the Automatic update process shown above.
Microsoft has some sort of a partnership with bigger hardware manufacturers like Intel, n Vidia, AMD, etc.
Therefore these companies regularly release driver updates for their components via Windows Update.
To access this functionality, simply go to menu Help -- This screen has several fields and options: The Work with: drop-down selection refers to which configured update site is selected.