This extension enhances the functionality of your Macintosh Quadra 840AV, Macintosh Quadra 660AV, or Macintosh Centris 660AV. Specifically, the extension corrects certain reported problems. These include (a) difficulties when printing with the LaserWriter Selectª 310 printer; (b) a possible system error when both the serial port and an AppleTalk¨ network connection are being used heavily; and (c) a possible system crash when simultaneously receiving a fax and transferring files over a network.
