Read Me First: I purchased an SSD drive directly from Crucial and, of course, it came uninitialized. After going thru the entire tear down, installing the new drive, and rebuilding the mini, it refused to recognize the new drive. So, of course, I had to re-tear it down, remove the new drive, insert it into an external housing and format it using my Macbook. After that the mini recognized the new drive. A word to the wise: format the new drive before installing it.
The instructions at the top recommend a T9 but the link plops a TR9 into your basket. In any event, the T8 works better.