My good fortune didn't last long..one day in fact. I found out from Maxtor tech that my power supply is not powerful enough to run both drives. Also after a week of calling tech for help, someone had the brains to ask me if i had a another power plug for the other drive. No I didn't even know about that, nor about the limitation of my power supply. How is a novice suppose to know all these things. I 've done some reseaarch before i bought the hd, and no where was it mentioned about a stronger power supply and an another power plug. The result from the tech said that the hd is probably defective now and they wouldn't accept it as a return. Because it wasn't send defective, but my connection did it. Their manual never even mentioned anything about the PS or extra plug.