Macintosh PowerBook Duo 230 (1992)
The PowerBook Duo 230 is a portable notebook personal computer, manufactured by Apple Computer and introduced in October 1992. Priced at US$2610, the PowerBook Duo 230 was the high end model of the two simultaneously released PowerBook Duos. The other one, the PowerBook Duo 210, was priced US$2,250. PowerBook 180's specs are almost same for PowerBook Duo 210, except PowerBook Duo 210 has a smaller display (9.1 inch). Its case design is identical to PowerBook Duo 230, but it shipped with 33 MHz 68030, differs from 25 MHz 68030 (PowerBook Duo 210). The PowerBook Duo 210 had a 120MB SCSI Hard Disk Drive. It was discontinued on July 27, 1994.
via Wikipedia: http://en.wikipedia.org/wiki/PowerBook_Duo_230