661-5393 2 GB SDRAM for Macbook DDR3 1066 SO-DIMM NB-5018W
This is a 2GB Ram upgrade for various Mac models. THIS IS A SINGLE CHIP, NOT TWO CHIPS. Specs: 2GB DDR3 PC3-8500 SODIMM.
Apple part number: 661-5393
MacBook (13-inch, Late 2009)
661-5393 2 GB SDRAM for Macbook DDR3 1066 SO-DIMM