#1 Plug in and go. Just keep the existing cable from the old x1900 and use the other one, plug into mother board. #2 You will need to buy one of those mini display port to DVI adapter. If you do not have one. #3 Read the instructions, I did not and broke the little PCI-E tab taking the old card out. Much quieter than the old x1900 and when playing X-Plane the fan does not go into high speed sounding like a airblower. I guess the cooling and design is more efficient if it can run in low speed fan even with x-plane. The Apple stores carry them, I went in and bought one but they seemed confused at first when you ask for it but they carry them.