Works perfectly after installing it seems to have bought a new PC so the Windows 8.1 Startup is quick as well as start programs. But beware it is imperative to purchase the adapter to connect it to your computer in order to clone the Windows partition + software from your old hard drive to the new Samsung SSD. So the cloning software comes with the SSD but not the adapter. This adapter uses the pinouts PC with an autonomous power supply on one side and the other one leaves with a conventional USB plug, otherwise impossible to clone your original disk. Personally I have not had this problem PCQ I have a laptop to have two hard disks, but then you have other worries. In fact when you have a hard disk location on pc you recover "the metal cradle" of your original hard drive to place it on your new Samsung SSD but if like me you have two hard disk slots well course need cloning adapter since you can clone directly to your desktop then it is interesting to place your original disk on the location and number two on the SSD number one location. First, this allows you not to buy a large SSD and so it does not cost you too dear and you keep your original disc to your data stoker. Unfortunately the metal cradle is not included with the SSD in this case you have to buy a second "cradle", this piece keeps the HDD in balance and is called BRACKET. This is important information and are indispensable, but I suggest you this purchase because your PC finds incredible youth.