HP LaserJet Pro 400 MFP M425 - Manual (Page 44)

3. Click the Finishing tab.
4. Select the Print on both sides check box. Click
the OK button to print the job.
NOTE: If the product is a duplex model and only
manual duplex appears, either the duplex unit is
not installed correctly in the Device Settings tab
of the Printer Properties dialog box, or the
media type is not supported by the duplex unit.
Manually print on both sides with Windows
NOTE: This product includes an automatic two-sided printing feature. However, the product also can print
two-sided jobs manually if the paper is not supported by automatic two-sided printing, or if the duplex unit
has been disabled.
1. On the File menu in the software program, click
Print.
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