The Apple Desktop Bus can be used to control external devices such as cut
sheet feeders, bin feeders, and output collators for the LaserWriter IISC.
The ADB port isn't currently supported in the LaserWriter IINT and
LaserWriter IINTX ROMs.
Developers may contact Apple Software Licensing for additional
information on developing ADB devices for the LaserWriter IIs. Search on
"Software Licensing" for address information.