661-3961 A1181 13inch Macbook, 512 MB SDRAM, DDR2, 667, SO-DIMM, 1.83-2GHz Core Duo NB-1576W
This is a 512MB DDR2 PC5300 Ram for various Mac computers.
Apple part number: 661-3961
Compatible models: White-A1181, White-A1181, MA254LL/A, MA255LL/A, MA472LL/A,
Compatible Mac info. : 1.83GHz Core Duo 13-inch 2.0GHz Core Duo 13-inch 2.0GHz Core Duo 13-inch Macbook
661-3961 A1181 13inch Macbook, 512 MB SDRAM, DDR2, 667, SO-DIMM, 1.83-2GHz Core Duo