661-3287 17inch - 20inch 1.6-1.8GHz iMac G5 DIMM, 512 MB, SDRAM, DDR400 NB-3576W
This is a 512MB DDR2 PC5300 Ram for various Mac computers.
Apple part number: 661-3287
Compatible models: A1058-M9248LL-White, A1058-M9249LL-White, A1076-M9250LL-White,
Compatible Mac info. : 17-inch 1.6GHz G5 iMac , 17-inch 1.8GHz G5 iMac , 20-inch 1.8GHz G5 iMac
661-3287 17inch - 20inch 1.6-1.8GHz iMac G5 DIMM, 512 MB, SDRAM, DDR400