Originally Posted by Raze664
No there would not be a power supply to it, or connections. It's impossible.
Noobs should check their sources before posting. The thing you are looking is called a "hard drive enclosure." There are two "major" sizes: 2.5" and 3.5". They accept either/both SATA and IDE. The connection to the computer can be USB or Firewire. The power supply would be a cheap external transformer. To start: look here
. This means that you can buy a cheap hard drive and a enclosure to make an external hard drive. Doing so usually saves ALOT