just to help everyone out . the Motorola Surfboard sb 6121 be indeed compatible with Bright House Network service . I be run rr 7mbp down and 512 kbp up in Michigan . I recently purchase it from Amazon for $ 78 with Free Shipping : http:\/\/www.amazon.com\/motorola-sb6121-surfboard-docsis-cable\/dp\/b004xc6gj0 to get it work , do the following : unplug you exist modem -lrb- remove coax\/ethernet\/power -rrb- , and plug the new sb 6121 in . it will not be work at first , so you must call the BrightHouse Network number : 1-866-898-9101 and go through the automate menu prompt , request Internet Service support . you will eventually reach a human representative . you will hopefully get someone extremely friendly like I do , and tell they that you new Modem be not work . they will ask for the MAC number on the sb 6121 Box , which you will provide to they . they will then `` send '' a new signal to you modem , and within 2 minute it should be up and run . they will then tell you that you need to return you BHN modem , either by drop it off at a local center , or by have a BHN representative come and pick it up from you home for free . my ping drop by about 12millisecond and my speed have be much more consistent at around 6.87 mbp . the old modem be 10\/100mbps , and the new sb 6121 be 10\/100\/1000Mbps . my router be also Gigabit Ethernet , and I notice that my movie buffer time on Youtube significantly improve . good luck , hope this help !