If you’re using an adapter to SATA, usually either Master or Cable Select will work just fine. Cable Select: where the drive tries to figure out which connector it’s on automatically.Slave: where the drive is connected to the secondary connector in the middle of the ribbon cable.Master: where the drive is connected to the terminal PATA connector on the cable.Also, keep in mind that IDE PATA drives have a jumper system on the back, where you must physically move a jumper to choose one of these three options: If you have a computer without any IDE PATA connectors for such a drive, you’ll need to purchase a PATA to SATA converter.