We bought an estimated 50 of these housing over the past months. Each new laptop that is "old" hard drive technology (HDD) to a beautiful, fast SSD replaced. The HDD is then equal to a solid backup hard drive in this case. The USB 3.0 Controller is excellent (despite the low price) and supplies wonderful speeds. Attention, only a USB to USB cable and a USB to USB 3.0 fits (ie no SSTX + SSTX- SSRX + SSRX- etc. - connection). We do not use the ON / OFF switch, the plates are always on. Highly recommended.