I decide to switch to Comcast xfinity internet in my area as they offer the fastest speed available , faster than what I be get with AT&T; Uverse . as I look into extra fee , I notice Comcast would charge $ 7\/month for rent they modem . I figure I will have they as my isp for at least a year , so I do not hesitate in skip they modem rental and buy my own . Amazon ship and deliver the modem fast . once I get it , I simply plug a coax cable from the splitter in my closet to the modem . I then plug in a rj45 cable from the modem to my router . I power it on , call Comcast to activate my service -lrb- basically give they the MAC address of the modem -rrb- , and I be online within 20 minute of open the box the modem come in . very simple to install , and no problem whatsoever so far .