That place has 0 cable modems.
»
ww2.cox.com/residential/ ··· 00000%7DYou can go there and see (that says San Diego but should be all the same).
Options are:
Motorola 6121/6180/6580
Zoom 5431j
I don't think you can find the others at places like Amazon or Best Buy so look for those options. Also only check the DOCSIS 3.0 modems, don't buy an older one.