661-4226 DDR2-667, SO-DIMM, SDRAM, 2GB - Macbook Pro Core2Duo A1151 15inch 2.16-2.33GHz NB-4491W
This is a 2GB Ram upgrade for various Mac models. THIS IS A SINGLE CHIP, NOT TWO CHIPS. Specs: 2GB DDR2 PC5300 SODIMM.
Apple part number: 661-4226
Compatible models: PreUnibody-A1151, PreUnibody-A1151, MA609LL, MA610LL,
Compatible Mac info. : 2.16GHz Core 2 Duo 15-inch 2.33GHz Core 2 Duo 15-inch Macbook Pro
661-4226 DDR2-667, SO-DIMM, SDRAM, 2GB - Macbook Pro Core2Duo A1151 15inch 2.16-2.33GHz