Hi Volkert,
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For Win7 you need to install the serial port driver from here:
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As you saw on your Win10 machine that the QMX was recognised and showing the available devices on your QMX.
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To show the QMX as a removable USB device, you must go into the update firmware menu option.
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I hope this helps.
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Regards,
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Mel. M0KMD.
