Denso AT10Q-SM User Manual page 18

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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.
Connecting the USB device and installing the USB driver
(1) Connect the scanner's USB interface cable to the computer or USB hub.
(5) Wait for the caution message for driver's digital signature to
appear, then click Continue Anyway to proceed.
(6) After completion of installation of the driver files, click
Finish.
(2) Wait for the "Found New Hardware" to appear on the
Windows task tray.
(3) Wait for Found New Hardware wizard to start, select "No,
not this time," then clock Next.
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