![How I fixed it: HP LaserJet P2015dn shows only manual duplex under Windows 7, but auto duplex unit is installed How I fixed it: HP LaserJet P2015dn shows only manual duplex under Windows 7, but auto duplex unit is installed](http://1.bp.blogspot.com/-w_oqGvMoBlU/UP6lhX0wQpI/AAAAAAAAAKQ/GkfhTB0JtQA/s1600/original.gif)
How I fixed it: HP LaserJet P2015dn shows only manual duplex under Windows 7, but auto duplex unit is installed
![HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support](https://support.hp.com/doc-images/3/c03085760.jpg)
HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support
![HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support](https://support.hp.com/doc-images/924/c03085635.jpg)
HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support
![HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support](https://support.hp.com/doc-images/127/c06456253.png)
HP LaserJet, HP PageWide - Unable to auto-duplex and 2-sided printing fails after installing the HP Universal Print Driver (UPD) in Windows | HP® Customer Support
![HP LASERJET P2015 SM-4 Service Manual download, schematics, eeprom, repair info for electronics experts HP LASERJET P2015 SM-4 Service Manual download, schematics, eeprom, repair info for electronics experts](https://elektrotanya.com/PREVIEWS/45612216/23432455/printer/hp/hp_laserjet_p2015_sm-4.pdf_1.png)
HP LASERJET P2015 SM-4 Service Manual download, schematics, eeprom, repair info for electronics experts
![HP LaserJet P2015DN (Double Side) Printer Black/White, Computers & Tech, Printers, Scanners & Copiers on Carousell HP LaserJet P2015DN (Double Side) Printer Black/White, Computers & Tech, Printers, Scanners & Copiers on Carousell](https://media.karousell.com/media/photos/products/2021/7/17/hp_laserjet_p2015dn_printer_1626500438_7575bea8_progressive.jpg)