Xpres SubliJet IQ EPSON Stylus PRO 4880 (Windows Power Driver Setup): Power Driver Installation & Getting Started Guide - Manual (Page 19)

Sawgrass Technologies, Inc . SubliJet IQ ® Getting Started Guide for the EPSON Stylus PRO 4880
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5. Insert the PowerDriver CD into your CD-ROM drive. The
installation program should run automatically. (If the program
does not automatically run, click Start > Run. Browse to locate
your CD-ROM drive and click Setup).
6. A screen will appear reminding you that the OEM Epson driver will
need to be installed before proceeding with the PowerDriver
installation process. Click OK to continue if you have already
installed this driver.
7. The Welcome screen is displayed. Click Next to proceed.