For the duplex unit

PostScript or PCL driver

1.Click Start ￿ Settings ￿ Printers.

2.Highlight the printer name and click File then Properties.

3.Click the Device Options tab, check Duplex Option Unit.

PostScript Driver

PCL Driver

4.Click OK.

C7100/C7300/C7500 Windows Me/98/95 Printer Drivers • 221

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Oki C7100, C7300 manual For the duplex unit, Click the Device Options tab, check Duplex Option Unit