[qanda]This thread is about the Optiarc AD-7200A. Click here to see full specs[/qanda]I actually have an AD-7220, but it was not listed on the product list. I just installed this in my computer, but when I go to burn either on Nero 8 or Ashampoo, it is burning as a dual layer, instead of single layer, and I dont know how to switch it back to single layer. Anybody know the answer???