yeah you have a sata III ssd you need an older model.
is this your model mini a 2009
http://www.ifixit.com/Teardown/Mac-mini-Model-A1283-Teardown/659/1
the a1283 is not the best way to name the model.
you mention that it had an ide connection for the optical adapter.
that means you have a 2008 or 2007 model that one uses an ide dvd player.
that model does not like sata III ssds .
the connection is most likely sata 1 not sata 2
I am certain that it is not sata 3. what happens is the ssd is simply too fast for the connection.
here is a screen shot of a 2011 mac mini with a sata iii ssd. note the connection speed is 6 gigabit or sata III
I no longer have your model but I have a 2010 model wait a minute and i will screen shot it. the second and third shots show my 2010 mac mini sata connection speeds one is with a samsung sata ii and the other is with the dvd.
the samsung is connected at sata ii speed or 3 gigs the dvd is connected at sata i or 1.5 gigs. I am certain that your connections are not sata III they are sata II or sata I or one of each. If you have a sata III ssd many don't like those slower connections.
The fix is do not use that ssd in that mini (not kidding) = not always true but often true.