Denso GT10Q-SU User Manual page 17

(7) If "DENSO WAVE USB-COM Port" is found as "The
updated driver (Recommended)", then click Next.
(8) If this screen appears showing that Windows is now ready
to install the best driver for the DENSO WAVE USB-COM
Port, then click Next.
(9) If this screen appears, click Finish.
When copying driver files is finished, "New Hardware
Found" messages for "Unknown device" and "DENSO
WAVE USB-COM Port" appear in this order.
All installation processes are completed.
(10) To make sure that the USB-COM device driver has been
successfully installed, open the Windows' Device Manager.
If DENSO WAVE USB-COM Port is added to the
sub-tree of Ports (COM & LPT) as shown at left, the
scanner is connected normally.
If the device is not added or it is marked with
remove this driver with the uninstaller, reboot your
computer, and perform the above connection process again.
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