Hello Together I have a Mac Book Pro 15-inch, Late 2011. Processor: 2.4 GHz Interl Core i7 Current memory; 4GB 1333 MHz DDR3 Serial no. is C02HD6GBDV7M Model No. A1286 I have now done some research on the internet. Officially it says that you can upgrade to a maximum of 8 GB. Unofficial sites say that it is possible to upgrade a Mac Pro 15, Late 2011 to 16 GB. Is this the case and if so, which product should I choose?