quick question about RF Coaxial Cable types

[Dwarfer]

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

 

[viking]

it is just the regular coax you can buy at radio shack