661-2820 256 MB SDRam DDR 333 SO-DIMM for Power Book NB-4605W
This is a 256mb DDR PC2700 Ram SODIMM for various Powerbook and iBook models.
Apple part number: 661-2820
iMac (USB 2.0), PowerBook G4 (15-inch FW800)
661-2820 256 MB SDRam DDR 333 SO-DIMM for Power Book