Memory itself is installed to order cheaper than direct from Apple. The installation is very easy. You need to open a Phillips PH00 Phillips screwdriver to the housing cover. For the removal and installation of RAM you need no tools. Guarantee from Apple remains is handled correctly made in full. The Kingston memory kit was immediately recognized and has been running for two months now with no problems in my MacBook Pro 2010. I would recommend to perform a hardware test after the installation (insert DVD and pressed at startup "C" hold). Can the KIT 2x4GB only recommend running as it should, and you have enough of storage.