New answers tagged troubleshooting
I have found from personal experience (not only my cell-phone) that debris are very often the root cause of the "not supported cable" alert. Cleaning the female connector (on the device) always fixed the problem in these cases.
From iPhone and iPod touch: Charging the battery: If your battery doesn't charge, or if your device shows a low-battery image, black screen, or "accessory not supported" alert, follow these steps. Inspect the connector at the bottom of the phone: Make sure that there are no bent pins in the connector. Make sure that the connector is free ...
You can turn it off in System Preferences > Accessibility > Audio > Flash screen
The red light may mean that the scanner has detected an internal error, so start at that end. First, try the scanner on another system if possible. If it works on another system, then the issue could be the USB connection or the software. It is not unheard of (though rare) to have a bad USB cable, so if you have a spare, swap it for the current one and see ...
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