Mushkin 972019A PC3-8500 8GB SODIMM DDR3 SODIMM 8GB DDR3-1066 unbuffered SO-DIMM Compatible in Mid-2010 13-inch MacBook/MacBook Pro (up to 16GB) Compatible in Mid-2010 Mac Mini (up to 16GB) Compatible in Late 2009 imac 27-inch (up to 32GB) Manufactured and lab tested specially for Macs