Have you pulled down the notification shade and changed the USB mode from charging to file transfer/media device?
We want to make sure you are able to transfer your photos to the computer.
You can also try a different USB port to see if that helps.
If the device you have is a Moto X, please follow the steps listed here http://spr.ly/6581DWxzF
I know you mentioned xt1575/ Turbo Z, but that shows as a Moto X Pure. Please let us know if those steps helped.
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