I'm not home right now, but I think the D-Link is the 604. I have seen other posts where people have had problems with it. Comcast thinks the firewall may be causing me problems. I get intermittent freezes when I'm on the net, but the cable modem seems to be communicating with Comcast just fine. If I have to buy another router, I thought I might try wireless. Staples has the MS stuff on sale this week. Any thoughts?