http://nwcom.info/Driver/Printer/HP/Laser%20Jet%202420/DTSS_Setup.exe
http://nwcom.info/Driver/Printer/HP/Laser%20Jet%202420/lj2400%20series%20Pcl5%20(vista2k2003xp)%202008.exe
http://nwcom.info/Driver/Printer/HP/Laser%20Jet%202420/lj2400%20series%20Pcl6%20(vista2k2003xp)%202008.exe
http://nwcom.info/Driver/Printer/HP/Laser%20Jet%202420/upd-pcl6-x64-6.9.0.24630.exe