I buy this as a upgrade for my old Motorola DOCSIS 2.0 modem since cox recommend DOCSIS 3.0 for the Preferred cable internet package I be on . I be hope for a small boost in speed but I have find that I have get up to a 50 % boost in both upload and download speed ! it seem that cox use bond channel for Preferred and I simply be not take advantage of that since DOCSIS 2.0 do not support bond channel usage . overall , if you currently have a DOCSIS 2.0 modem , I recommend you check with you cable internet provider to see if a DOCSIS 3.0 modem be recommend . you might be miss out !