This is actually not the correct way to disconnect a host computer from an AWUSB. If you force a disconnection this way, that host computer will immediately attempt to re-connect. This is because it's the host computer (not the AWUSB) that initiates the connection, to the AWUSB.
To disconnect a host computer from an AWUSB, run the AWUSB Configuration Utility and click the Disconnect button.
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