Summary: I've been using Kingston DIMMs for many years, and they keep getting better. I normally used them on PCs, but I specced this one to configure with my Mac and it works without any problems whatsoever - I basically quadrupled my RAM with two 8 GB DIMMS, exceeding Apple's GB limit by twice what they tested for the my model Mac. It's like I got a brand new Mac! Super FAST!!
Working perfectly (now) in a 2011 Mac Mini running OS 10.9
9 March 2013
Summary: Rock solid for a month now, with this installed in the "bank 1" (outer) RAM slot, and one of the factory-installed 2GB DIMMs in bank 0. No problems, and all 10GB show up in the system, with the DIMMs in this arrangement. I mention the arrangement because early on, I had also tried putting them in the opposite slots to see if that made a difference in performance. The Ethernet and Wi-Fi did not work, at all, until I switched them back. Not sure why.
Summary: I installed these memory modules in my Macbook Pro 15" with no complications. I now have 16GB of RAM. Has definitely improved performance and has been working fine ever since I installed them.