Sharp AJ-2105 Operation Manual page 27

Select the USB port (typically "USB-PRN0:"), and click the
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"Next" button.
If you reinstalled the printer driver, more than two USB ports, for example, USB-
PRN0, USB-PRN1, and USB-PRN2, may be displayed on the screen as your
options. In this case, select the newest port, which has the largest port number. If
there are any port numbers which are not in use, the printer will work properly.
If the program displays "Do you want your Windows based programs to use this
printer as the default printer?", check "Yes".
Click the "Yes" button.
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The setup program will start to copy the files.
If a message prompts you to restart your computer, click the
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"Yes" button.
Your computer will be restarted.
You have completed the installation of the printer driver.
If a message informs you of the completion of the installation,
click the "OK" button.
You have completed the installation of the printer driver.
Before printing align the print head by the procedure on page 30.
INSTALLING THE PRINTER DRIVER
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