Denso QK20-R User Manual page 19

• To use two or more USB ports
To use two or more USB ports, run the Setup.exe by the same number of times as the number of USB ports to be used.
Running the Setup.exe once adds one COM port.
Note: USB ports can be assigned to COM ports, one to one. It is not allowed to assign two or more USB ports to a
single COM port. To use two or more USB ports with a single USB device by turns, you need to run the Setup.exe by
the same number of times as the number of USB ports.
(5) Wait for installation of the driver files to proceed.
(6) After completion of installation of the driver files, click
Finish.
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