The official Xbox 360 hard drive connector combines a SATA connector and a power connector into one plug. Even though it is proprietary, some clever hackers have found a really easy way to interface with it. Since it is slot based you can just etch contact pads onto a circuit board and plug it in. The hard drive inside uses standard connectors, but this adapter will keep you from opening the case, voiding your warranty. It will also be much quicker to use daily. You can use Xplorer360 to get full read/write access to the drive. They’re selling the adapter in kit form for $17 and assembled for $20, but the high res pics show how easy this is if you just want to build it yourself.