I had an old computer which was not being use. It had a new SATA hard drive with 500 Gb capacity. I was not able to use it with my laptop so I bought a converter which sort of converts the SATA plug into a usb plug. So I can connect it through USB cable. But it was not working and a friend told me that I need a portable power supply for it to run. So how can I power my hard drive?
