4GB Memory Upgrade DDR3 PC3-8500 Ram SODIMM for Mac

661-5482 SDRAM, 4 GB, 1066, SO-DIMM, DDR3 - A1286 15inch i5-i7 Macbook Pro Mid 2010 NB-4003W
This is a 4GB Ram upgrade for various Mac models. THIS IS A SINGLE CHIP, NOT TWO CHIPS. Specs: 4GB DDR3 PC3-8500 SODIMM.
Apple part number: 661-5482

Compatible models: Unibody-Mid 2010-A1286, Unibody-Mid 2010-A1286, Unibody-Mid 2010-A1286, MC371LL/A, MC372LL/A, MC373LL/A,

Compatible Mac info. : 2.4GHz i5 Intel 15-inch 2.53GHz i5 Intel 15-inch 2.66GHz i7 Intel 15-inch Macbook Pro

661-5482 SDRAM, 4 GB, 1066, SO-DIMM, DDR3 - A1286 15inch i5-i7 Macbook Pro Mid 2010