Perfect dismantled without its iMac

At first I wanted to open my iMac 27 in mid-2011 to put an SSD in it. I had all the tools SSD but not the time to open it. And then I heard of happens, I told myself to 130 this prevents me to open with the rear risk. So I associated with Transcend SSD 256GB purchased coupon here for 90 and it's prime. Two small discrete white lights to show that the unit is on and data circules, and speed of Thunderbolt SSD impresses with ls, how reacted OSX is the day is the night compared to the hard drive that is located by default . More noise and more waiting. The greatest happiness is starting the Mac with the opening of any software that I had left open.
Just a pity that there have no cover to hide the SSD as on GoFlex SSD