661-4394 Mid 2007 Macbook 2GHz-2.16GHz Core2Duo SDRAM, 1 GB, DDR2, 667, SO-DIMM NB-1839W
This is a 1GB DDR2 PC5300 SODIMM for many models of the Macbook, Macbook Pro, Mac Mini, iMac, etc..
Apple part number: 661-4394
Compatible models: White-A1181, White-A1181, MB061LL/A, MB062LL/A, MB063LL/A,
Compatible Mac info. : 2.0GHz Core 2 Duo 13-inch Macbook , 2.16GHz Core 2 Duo 13-inch Macbook , 2.16GHz Core 2 Duo 13-inch Macbook
661-4394 Mid 2007 Macbook 2GHz-2.16GHz Core2Duo SDRAM, 1 GB, DDR2, 667, SO-DIMM