Just want to add that I had no problem getting a Motorola MCard installed and working with Charter here in Duluth, GA. When I called, I told them I needed an MCard or two SCards but the person on the other end didn't know what I was talking about. It just so happened that the tech brought out two SCards and one MCard. After the first SCard didn't work he put in the MCard (thinking it was just another Cablecard, and it worked! I convinced him to just leave the one MCard and he did, and it's working great!