Installing a DVD Drive

I have installed a DVD Drive in to the an computer. This was done by opening up the computer an then removing the case so an dvd drive can be inserted in to the computer. Because there was already an dvd drive already installed into the computer i needed to make this one a slave to the other which was the master. I did this by leaving the pin in to the dvd drive when it was installed, this is because it uses the same wire to connect to the motherboard as first dvd drive.