Replacement Keyboard Keys for PowerBook G4 Titanium Keyboard replacement keys for PowerBook G4 Titanium Don’t need an entire new keyboard, but missing a key or two? We can help! Just enter which key you need in the section below and we’ll send you out the complete key and scissor assembly to attach to your existing keyboard.If you need multiple keys, just enter the names of each key (seperated by a comma) and select the total quantity of keys you are ordering from the pull-down menu.