Kingston KTA-MB1066K2 memory 8GB (1066MHz 204-pin SO-DIMM, 2x 4GB) DDR3 Kit for Apple notebook (for iMac units from 2009) (Personal Computers)
The memory runs smoothly on my Mac mini (Mid 2010) and has had enough of RAM! Installation is simple, a guide can be found at Apple. Thanks to the Amazon fulfillment delivery was fast and free shipping. So, since there is nothing to complain about ..