dear all, I have a arduinouno board aim traying to connect to a MacBook with mac osX10.6.4... I followed the instruction, but...as soon as I connect the usb cable I get a message like... usb devices using too much power disconnected... and I do not see any usbmodem in my list of serial ports... …

USB modem problem on mac osX10.6.4

cmiyc November 30, 2010, 2:39pm 2

usb devices using too much power disconnected..

Is there anything connected to your Uno?