Mac USB troubleshooting tip

[kpreid]

The Mac System Profiler app, in the “USB” section, will display a tree of all USB devices, including hubs, and what they claim to be. This can be useful when you're trying to find where the problem is when your system isn't seeing a device at all.

(You may also be surprised at the number of USB buses (a.k.a. root hubs, I think) and built-in USB devices your system has.)