USBF: 7412.280 The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 1 of Hub at 0x14000000)USBF: 7416.640 The IOUSBFamily was not able to enumerate the device (Port 1 of Hub at 0x14000000).
when i attached the USB to the arduino. immediately my mac shut down. i panicked and disconnected the entire setup.
5V. This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.