Where can I download drivers for HP LaserJet 8500DN?

The direct link to the official download from hp is below. Just select your operating system :)

http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=15090&lang=en&cc=us&taskId=135&prodTypeId=18972&prodSeriesId=25506

visit www.hp.com

& go to the download drivers option.

Its done!

here-
http://www.hp.com/#Support

for Window XP, ME, 2000 and 2003 go to:

http://www.driversdown.com/drivers/3884.shtml

i couldn't find anything for vista (but try the above) and nothing for mac. But then you should be able just plug it in and it should automatically install. That's what happens whenever I use a new printer.

Good luck with getting your printer set up!!

Their website.