When you print to a PostScript printer, PostScript file, or PDF, Illustrator automatically uses the default PPD (PostScript Printer Description) for that device. You can switch to a different one to suit your needs.
A PPD that corresponds to the current output device.
Other. Lets you select a custom PPD, such as one provided by your service bureau for use with the specified printer. The PPD’s filename corresponds to the printer’s or imagesetter’s name and model, and may display a .ppd file extension (depending on how your system is set up.) Navigate to the PPD you want, select it, and click Open.