I have an extra PowerR iMac video out interface which was purchased at least two years ago. It was pulled from a 'deceased' iMac. Now, I need to install it in another iMac. Unfortunately, I don't have an archive copy of the installation guide AND the tech didn't note how it was installed before it was removed. Of course, PowerR sold its intellectual property and is no longer in business. Does anyone have a copy to share via fax or scan or pdf???