Specifications

RS-232
This serial port connects a mouse, mouse pen, or trackball for fine control
of wipe pattern position and other joystick functions.
RS-422
This serial port is not currently supported.
Keyboard
You can connect an off-the-shelf, PC AT keyboard to this port for naming
crosspoints and disk files.
External Floppy
This port connects an external 3.5" 1.44MB floppy disk drive. You will
need this drive if you mount the Control Panel in a console that covers
the built-in disk drive.
Control Functional Description 8150 Technical Guide
1-26
Introduction
9100-0212-04 - May 2000