I went through a stack of old drives with a USB to SATA adapter to see what was on them and then ran a secure overwrite utility to them turned off. Some of my old drives turned out to be IDE, not SATA. Instead of buying another USB adapter I got this little thing to connect IDE drives to my SATA adapter and it worked fine. Power is supplied via the supplied cable. It's actually designed as an internal component, so basically it's nothing more than a vulnerable circuit board, but if you treat it as such, it gets the job done. One tip; When connecting IDE drives, I've found that setting the drive jumper to Master and not Slave works.