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If your USB port cannot detect the Maven Pro tablet, then try using another port, or check that the slot on the tablet does not have any lint or other debris stuck in it that may be hindering the connection.
If that doesn't work, try using a different USB cable.
If it still won't connect, then try connecting to a different computer and let me know if it works ok there.
If you need remote assistance with the USB port on your own computer, or with USB recognization problems, let me know and I can assist with that remotely.