I had an occasion when a USB drive was not recognized by my Mac. After playing with the device for a while, I tried another USB drive and found that it wasn’t recongnized either. I did some research and found that a problem with the Power Management Unit in my Powerbook could sometimes cause a USB port to not be recognized. I found a FAQ for resetting the PMU at http://docs.info.apple.com/article.html?artnum=14449#faq6
For my Powerbook the PMU reset instructions were:
- If the computer is on, turn it off.
- Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
- Wait 5 seconds.
- Press the Power button to restart the computer.
I did this procedure and my USB port came back to life. I don’t know if this is the problem that some Mac users might be having with their Clip, but it might be worth a try.
Message Edited by rvmeush on 01-01-2008 05:42 AM