Sorry, but you cannot use a USB cable for audio with a SiriusXM Radio dock. The reason is it's not possible to send audio out from a SiriusXM cradle or receiver and connect it to a stereo via USB connection. USB does not allow for standard audio signals to be passed from one device to another.
You can use USB for Power
You can use our PowerConnect USB power cable or our Standard 5V USB power cable to power the receiver in a car or home. Be sure to check the compatibility when ordering.