I'm looking to buy those chipsets that connect to harddrives so you can connect to usb. They usually come with cases as external enclosures (if you open an external drive you'll see it, you can use this chipset, or whatever it's called, to connect any other hdd by usb). I just want to buy the chipset, any idea what I should google to find these things? or a good place to buy them? I'd prefer one for usb 3.0