I want to upgrade my mac mini late 2009 with a SSD since my HD is beginning having problems booting. I know that my mac mini has got a SATA 2 port but still I want a SATA 3 SSD for future upgrades. I have read that SATA 3 SSD's are downward compatible with SATA 2 ports but also experienced that mac mini late 2009 are having problems with some SATA 3 SSD's. For some reason it become the speed like a SATA 1. My question is: what SATA 3 SSD should I choose to get the SATA 2 speed in my mac mini late 2009? The size of the SSD should be about 250 GB. Thanks in advance!