Epson B 510DN - Manual (Page 75)

3. Make sure that Duplexer Installed is displayed in the Auto Duplex Printing Information section,
and then click OK.
4. Close the EPSON Printer Utility3 dialog.
5. Access the Print dialog.
& See “Accessing the printer driver for Mac OS X” on page 17.
6. Click the d button to extend this dialog.
B-310N/B-510DN User’s Guide
Printing with Special Layout Options 75