I hate comcast. Just thought I would preface this with that statement. I picked up the USB 3G/4G USB modem, added it to my plan, and connected it to an old useless laptop. Using Windows' built in "internet connection sharing", I connected the LAN on the laptop to the WAN port of my router. Boom, DSL speed connection served up to my entire home. And as an added bonus, when I go out of state and need an internet connection on my normal laptop, I just take the thing with me and my connection follows me everywhere I go.