Works just like the Comcast model they charge $10 a month for. This fits in a phone and works well. Payback and save you money in less than two years, depending on your costs. Before I knew I could buy my own cable modem, eight years of leasing from Comcast meant I paid $960 for the last one and still didn't own it! Never again. Get your own modem and don't let the cable company take advantage of your ignorance (as I haven't found out yet).
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