Possible Clues:

• Technological debuts of 1998
• Apples on desktops
• Mice can be found around them
• G5 models, e.g.
• Apple.com purchases
• They don't do Windows, as a rule
• Popular desktops since 1998
• Apples for the teacher, maybe
• Each of them comes with a Mighty Mouse
• Colorful Apples