Early versions of the Apple Facts guide dated through 8/94 contain an error in the LaserWriter Pro 810 section by referring to a parallel interface on the LaserWriter Pro 810. The LaserWriter Pro 810 does NOT include a parallel port, but does include Ethernet, RS-232 serial, and LocalTalk interfaces.
Due to last minute changes in the printer product lineup a parallel printer interface card for the LaserWriter Pro 810 was inadvertently left on the service price pages. The part is listed as Apple service part number 661-0850 and is called a communications card. Although this parallel card can be installed in the LaserWriter Pro 810 in place of the Ethernet option, Apple does not provide support for it. The card will be removed from the service price pages shortly.