Summary: Had a problem with this PC I built myself in 2012. I never got it working for two years, replaced the HD 3 times, the motherboard the same, I hired a tech to fix it and he replaced the HD again, then the motherboard again, only to still not work.
Summary: I bought this to enhance the working memory of a new HP ProDesk computer that came with 4 GB RAM. It was extremely easy to install. The computer recognized it on start-up and reported a total of 8 GB RAM. Best bang for the buck!