i know i need the sata cable and power cable is that all i need
Yep, that's all you need. Some older SATA drives have legacy support for normal 4 pin molex connectors in addition to the SATA power cable. If your drive is one such, do not plug in both. Choose one or the other. If you buy a retail boxed drive instead of OEM, you should get a 4 pin molex to SATA power cable if you don't have SATA power connections already. It's also possible that the harddrive you bought is SATA2 (aka SATA 300gbps). If your motherboard only supports SATA 150gbps, there's a jumper you need to leave on the drive. If you have a SATA 300 drive and your motherboard supports SATA 300, you'll need to remove the pin for full speeds. It'll work though if you forget to remove it. You can look in the user's manual to see what your motherboard supports.
IF YOUR CONNECTOR INTERFACE FORMAT IS IDE,THEN YOU CAN BUY A IDE TO SATA ADAPTER CONNECTOR TO INSTALL SATA OR VISA VERSA.
