it be exactly the same model\/unit use by xfinity\/comcast . I purchase this one to replace the rental unit from Comcast . after receive the new unit , I unplug the rental unit and plug in the new unit . call Comcast . the guy on the phone could not get it to work , and could not find out why . he ask I to call again in normal business hour . -lrb- I call they at 10pm . -rrb- I decide to connect it to my computer anyway . after firing up my browser , it be all automate . with only a few click on the computer , the new unit be install and work great . lesson learn : avoid human interaction if possible , especially when deal with Comcast . Hope this help !