I buy one of these baby because it be by far the cheapest modem I could find out there , and because with Amazon Prime , shipping be lightning fast . I have Comcast by the way . it work great for 4 or 5 day , and then a major Thunderstorm hit my area and there be a few power spike . the modem just stop work . none of my other electronic device be affect -lrb- include my router , which be not connect to a surge protector , my modem be -rrb- . I guess that the electrical current that kill the modem come from the cable jack , not the power supply . I be pretty upset , but I buy another one from the same seller the day after -lrb- 30 dollar be not worth the anguish of deal with Linksys customer support -rrb- , and this time I get a surge protector that insulate the power supply , as well as the cable input . be run great for 2 week now . moral of the story : protect you investment , you internet depend on it .