I just want to make sure I am understanding everything I have read before I make any additional purchases. I want to be able to play games/ nesoid, snesoid roms on my Nexus 7 with a controller. To my understanding, I can buy a wireless PS3 controller and a mini usb to otg cable, connect the two, then to the Nexus 7, and everything should work. I have read that I do not have to root for this to work. The one remaining question I have is that I read I need an additional cable that comes with the PS3 (some kind of usb cable.) What kind of cable is it that I need, and where can I get it as I don't own a PS3 already? Thanks for any help.