Are you sure you are looking at cable modems. Most people are using motorola surfboard or arris brand. These all use F connectors. I don't know how you are going to get coax cable connected other than to use a F connector. The only difference is most people have gone to rg6 cable rather than rg59. Now if you mean the method of crimping the ends to the cable they are now using something called snap and seal but it is still a F connector.