ARA: Using on Quadra 900, 950 or IIfx with Virtual Memory
Using ARA Personal Server and Virtual Memory.
If you are using a Macintosh IIfx, Macintosh Quadra 900, or Macintosh Quadra 950 and have virtual memory turned on, you must open the Serial Switch control panel (included on the Install 2 disk) and set the serial port setting to Compatible.