ok, so I tried installing the HD and my computer didn't pick it up. I'm guessing it's because it is set as the master drive, but not running Windows off of it. I'm not familiar with SATA HD's so is setting jumpers on SATA HD's necessary? And the adapter I bought has a 4 pin power connect which I hooked up to the PSU
Edit: I'm thinking the power is my problem, but I don't know what to do I thoguht the 4 pin on the adapter would power the HD since the cable is connected to my PSU. But there's a molex connector that's just there. Here's a picture