If you have been using a LaserWriter Plus, your IBM PC/AT or clone can also
access the fonts resident in the LaserWriter IINTX hard drive through the
RS-232 interface.
The fonts installed on the LaserWriter IINTX hard disk will appear as if
they were in the LaserWriter IINTX ROM. All fonts, whether in ROM or installed
on the hard disk, should be fully accessible to any PC/AT or AT clone that can
already access the fonts in a LaserWriter Plus.
Adobe and Apple designed the hard disk option so that LaserWriter IINTX
operates transparently, and the user can thus access additional fonts without
having to download them with utilities.