It's not all disk drives and video cards!
As anyone knows, there are many more resources to be shared, served, and managed than applications and disk volumes (though we will cover adding disks, too). Scanners, modems, printers, tape drives, and ZIP and JAZ drives can all be made available to your Linux OS.
The large number of available hardware for the x86 architecture is quickly being made workable under Linux. And with products such as 3D add-on cards and CD-R writers becoming less expensive, people are starting to use them (and their computers) in ways we could barely dream of just a few years ago.
Most scanners can be purchased with a USB, parallel, or SCSI interface. At this time, only SCSI scanners ...