I have Charter as my internet provider . they highly recommend this Motorola modem . I be tell it not only be a `` support '' modem by they , but on the top of they recommend list of modem . prior to this modem , my internet speed be at most 14 mbp download and 1 mbp upload . with this modem I record download speed between 33 - 35 mbp and 3 - 3.5 mbp upload . -lrb- I be only on a Charter plan pay for 15 mbp download and 1 mbp upload . -rrb- when ask by a Charter tech if i want to upgrade to they 25 mbp download and 3 mbp upload plan , I tell he , `` no , I be already exceed those speed with my current plan . '' this modem work great .