I've recently gotten Optimum Online and it seems that my cable modem (a motorola SB4100) does not work when I run it through a 2-way splitter (the other split going to my TV), but works when I run it ...
I just recently moved in to a new place with a roommate. He had his cable modem and router positioned basically as far away from my bedroom as possible. He doesn't use it for much besides his wireless ...