Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Caveat emptor

I purchased this enclosure because it was one of the few to include a fan, but the airflow is so low as to not provide any substantive cooling, and since the enclosure is plastic, there is little thermal coupling , as there would be with a metal enclosure. The included instructions claims only support for 300GB, but I was able to get a 400GB drive working. Instructions neglected to mention the drive MUST be jumpered for MASTER - Cable Select causes non-detection of the device under Windows XP pro. Plenty of screws PLUS screwdriver provided with product.