Can the Officejet pro 7740 print double sided without having to flip the paper manually?
Hi, Make sure the Automatic Duplexing option is enabled:
Enter Control Panel > Devices and Printers. Right click the printer icon, then click Printer Properties. Click the Device Settings tab. Set the Automatic Two-Sided Duplex Accessory as installed and click OK to save the change.
Now Automatic Duplexing should become available.
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