Your service performed the M4 as a "data grave" in the expansion bay in a Lenovo W520 and then has a classic Samsung HDD replaced with 640GB. The Perfomance profits, coupled with the disappearance of the rotation and noise Access to the previous hard drive was a dream. Since I use my computer primarily in the image processing, also an SSD worth as "data grave".
Fortunately, I have drawn before the failure a fresh backup of the computer, because I wanted to install on the internal mSATA SSD second Win8.
The M4 is now replaced by a Samsung 840 Pro Series with 512GB. Likewise, the main SSD, which has become too small.
Congratulations to Amazon, who responded within 30 minutes on Good Friday on my e-mail and offered me the refund of the purchase price incl. Free returns.
2 stars because I was with the performance, and in terms of the former purchase price, in and of itself more than satisfied. However, the SSD already after 5 months left the service, is very annoying. An OCZ in the business notebook has even managed already after 2 months. This experience has emptied very to pay me to back up and carry this out in short intervals, as generally adopt SSD without notice.
