The device is solidly built and very easy to connect to a USB port. No proprietary driver is required - Windows will happily take care of this hard drive after you plug it in. Drivers are included, but there is no CD and you don't need a CD anyway. It is very easy to insert a hard drive into the bay and access it on a Windows PC. Back of the device so the user cannot leave it on when not needed. I plugged the device into a USB 3.0 port and it looks like my speed for the hard drive inserted into the device is very close to the speed of the hard drives in the computer case. Why 4 stars and not 5? 1. A wide slot is suitable for a thick slice, which is good. But there are also thinner discs. While these drives fit perfectly in all slots, they don't sit tight in the wide slot, and even the possibility of wobbling worries me that the slots might break at the bottom of the HDD slot. I hope they don't break. But hope is not trust. 2. When there is nothing in the HDD slot, the dust box in the top slot is open. Some cover would be nice.