I do think it is fairly obvious that this is referring to the coax cable from the wall port to the box. Now admittedly we don’t know how long a cable he needs, but as far as I know, every single VM TV box uses the same basic cable connection, and even if he has gotten the terminology wrong and by ‘set top box’ he is actually referring to the hub rather than 360, V6 or TiVo, well it still uses the same cable, no?
Not too sure what the confusion is here!