Problem connecting new internal hard drive

Hi I am replacing an internal hard drive (wd 3000jds) with a wd5000aaks. The wd3000 has a legacy connector but the wd5000 does not have the pins to connect the legacy power.  The computer does not have the 15 pin tp1 connector it only has the legacy adaptor.  How do I connect my new wd5000 to my computer? Do I need to but something that fits on the legacy power connector to convert it to tp1 15 connector?

Any help would be grateful



You can buy a Legacy to SATA power adapter.