HP LaserJet Enterprise 600 Printer M603 series - Manual (Page 132)

Print on both sides (duplex) with Windows
Manually print on both sides with Windows
NOTE: This information applies only to products that do not have an automatic duplexer.
1. On the File menu in the software program,
click Print.
2. Select the product, and then click the
Properties or Preferences button.
3. Click the Finishing tab.
116 Chapter 8 Print tasks ENWW