hello basically i want to know what type of cable 'cable modems' use to connect to internet, I know its a RF Coaxial cable, but there are different types and i want to know which type this is I use a SURFboard® SB5100 and i want to buy an extender so i can move the modem upstairs. It looks like either 6 or 9: RF Cable Assemblies, Coaxial Cable Assembly,Coaxial Cable, Cable Assemblies Thanks for help