**All ram is pulled straight from working MacBook Pros** You are looking at a multi listing for either 4GB (2x2GB | PC3-10600) or 8GB (2x4GB | 1333MHz) of ram. These have all been tested and are 100% functional. These will work for most 2010-mid 2012 non retina macbook models, iMacs and Mac Minis. These have a total of 204 pins, please confirm these before purchase. We ship these out first class packages by USPS and it will take 2-3 days to get to you.