USB hard drive enclosures vary widely in quality.

How much did you pay for it, and send us a link to where you got it unless you bought it in a physical store somewhere. As Norway suggests, try it on a friend or co-workers laptop that is a newer model and also has usb 3.0 ports. If the enclosure causes problems and does not have faster transfer rates on that 2nd laptop as well, chances are it's defective and should be returned to the place you purchased it from and a refund demanded.

Stick with good vendors if you bought online such as Amazon.com or newegg.com. You may find you pay a bit more, but you get what you pay for!
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