Canon imageCLASS LBP251dw 매뉴얼

This explains what you need to confirm beforehand in order to install the driver correctly.

 About Installation(P. 14)
 System and Service Requirements(P. 15)
 Installation Preparations and Precautions(P. 17)
 How to Refer to the Readme File(P. 19)

Pre-installation Check

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