661-5035 DDR3 1066, SO-DIMM SDRAM, 4 GB - Early - Mid 2009 17inch Macbook Pro NB-3819W
This is a single 4GB Ram chip upgrade for various mac models. THIS IS A SINGLE CHIP, NOT TWO CHIPS. Specs: 4GB DDR2 PC2-5300 SODIMM.
Apple part number: 661-5035
Compatible models: Unibody-Early 2009-A1297, Unibody-Early 2009-A1297, Unibody-Mid 2009-A1297, Unibody-Mid 2009-A1297, MB604LL/A, MC226LL/A, MC227LL/A,
Compatible Mac info. : 2.66GHz Core 2 Duo 17-inch - 2.8GHz Core 2 Duo 17-inch Macbook Pro , 3.06GHz Core 2 Duo 17-inch Macbook Pro
661-5035 DDR3 1066, SO-DIMM SDRAM, 4 GB - Early - Mid 2009 17inch Macbook Pro