Oh.
Model Name: PowerBook G4 15"
Model Identifier: PowerBook3,5
Is that it? All I know is that it's one of the earlier PowerBook G4s. Apparently the early models were notorious for the LCD screen hinges breaking or the video cable wearing out from the screen constantly being opened and closed. After this it was the aluminum bodied Powerbook G4 that looked just like the first-gen Macbook Pro but without the Intel hardware and the MagSafe power cord.