The kit came, unlike other described here after only! 1! Day. Everything was as described, recommended in any case!
IMPORTANT NOTE: I had a big problem, but more on that later. You should pre-record on a USB flash drive with this Apple tool !!!! [...]
Then I have made myself with the guidance of iFixit to work and have the HDD replaced by SSD (so called original Apple cable and the same slot as before) and the HDD with the new connector down to where room for one more drive was , (Has lasted about an hour the second time no 20min)
After all, if the SSD is installed and is still on the Apple OS X HDD that, then nothing much happens. So I had the problems that the mini did not want to boot or that I could not use the recovery mode. So expanded HDD again, only pure SSD (ie completely "empty" the Mac. Connected the stick previously created luckily selected with Alt on startup, OS X installed and ready. When I had installed the HDD again, I could not this format .... I saw no way out of the situation and have it again expanded (now routine ^^) and then ironed on another PC with s0kill (DBAN, GParted etc. also go, Windows is not as remain leftovers!)
!!!!!! ALSO IMPORTANT: Before you expanding everything etc: Run the Recovery Wizard and save it to a USB flash drive (at least 2GB.), Then remove the HDD and delete BEFORE completely, the replaced HDD by SSD, the HDD down and then Reinstall the SSD with the created embroidery OS X !!!!!
Now the Mac mini starts in 5sec and in addition I have 500GB :)