Very compact housing, works for me for HDDs up to 500GB (larger I have not installed). Installation of hard drives is completely without screws. Only problem often represents the included USB extension cable. Is the start-up current of the HDD is too high, which is usually the case, then "clicks" the plate only. I have now completely renounces the extension and always put the case to the very short, anchored to the housing USB connector on (about 5 cm in length). About Here there are never problems, even if the housing then sometimes hangs in the air.
