Can't connect Nexus S to my Mac OS x Lion 10.7 for USB Debugging

Question

I tried to connect my Nexus S (Android version 2.3.5) to my macbook pro 10.7 (OSX Lion). However, the notification on android phone was just ON and OFF alternative. I tried this command on my terminal.

adb usb 
>>error: device not found
adb devices 
>>List of devices attached 
>>[ nothing here ] 

Please help me with this issue. Thank you!

Answer 1

Make sure you don't have a power-only USB cable. If the phone charges but Mac doesn't think it's there, it's a sure sign.