I'm not a very knowledgeable computer person, so I need to ask a question. I'm using a Verizon DSL modem. The modem came with both Ethernet and USB cables. Which one is the best hookup method? On the modem there are four LEDs, "Power", "Ready", "Ethernet" and "USB". I am currently using the Ethernet hook up. While on line the Ethernet LED blinks continuously, is this normal?