. "The PowerBook 2400c (codenames: \"Comet\", \"Nautilus\") is a subnotebook in Apple Computer's PowerBook range of Macintosh computers, weighing 4.4 pounds (2.0 kg). Manufacturing was contracted to IBM. In a return to the PowerBook 100 form factor, It was introduced in May 1997 as a late replacement for the PowerBook Duo 2300c, which had been the last of the subnotebook PowerBook Duo series."@en . . . .