WD1200B002RNN External Drive Legacy needs power cord

I have a WD1200B002 Legacy external. I need a power cord. Recently purchased one on Ebay but the end that plugs into the drive is definitely not for this drive unless there is another part for that cord. Anybody have an extra cord or info on where I can pick one up?

Maybw this will help you figure out what you need  http://wdc.custhelp.com/app/answers/detail/a_id/1378/session/L2F2LzEvc25vLzEvdGltZS8xMzY4Mzk0MTQwL3NpZC9ha2hCYTFxbA%3D%3D