Epson EPL-N3000 Reference Manual page 165

4. Double-click Mac OS X, and then double-click Adobe PS. The
Authenticate window appears. Make sure to enter the user
name and password for an administrator.
Note:
You need to login to Mac OS X as an administrator in order to
perform software installations.
5. In the welcome screen that appears, click Continue, and
follow the on-screen instructions.
152
Using the PostScript Printer Software (Macintosh)