Here are some examples of hardware integration styles. Can you find the similar styles in "system integration"?
1. Swiss army knife, leatherman (thanks to Steve), and other N-in-1 tools
2. Universal remote
3. Constructicons/Devastator
4. Lego
5. Converter/adaptor, for power plugs, A/V cables, etc.
6. Screwdriver with replacable heads
7. USB
8. iPhone
Do you have other good hardware integration examples?