cyrnel

USB +5v is easy, and doesn't necessarily tell you anything. Depending on chipset and config you can get power when data + & - are ignored or completely detached.

Does that mean the USB controller(s) and hub(s) and devices were visible, or just that you didn't see error conditions at the top level?

If you're comfortable looking through your BIOS, make sure the USB ports are enabled. Just in case you have a bastard of a roommate or something.

What else is attached to the system?

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There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195