HT1341 I can't add an HP color LaserJet 2550L printer to Mac 10.8.5
to HP color LaserJet 2550L
The cable works fine on Windows PC.
No printer can be added at all. This is a Bug in Mac OSX Lion
Read the user manual that came w/the printer and/or contact HP Support.
http://support.apple.com/kb/PH11070 OS X Mountain Lion: Troubleshoot a network printer
http://support.apple.com/kb/PH11143 OS X Mountain Lion: Reset the printing system
http://support.apple.com/kb/HT3669 Printer and scanner software available for download
This is a Bug in Mac OSX Lion
Which is OS 10.7.x.
You stated in your post & confirmed in your profile that you are using Mountain Lion (OS 10.8.5). If you feel that you have found a bug, report it by completing a Bug Report.