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I tried self-installing this with comcast and as suggested by a previous reviewer, Comcast/ Xfinity "tech-support" tried to tell me that this router was not supported and that it was not factory new because they couldn't identify the mac address, even though it clearly shows this device on their list of approved devices and the box is stamped with Xfinity. A point of note however that hasn't been previously discussed, is that Comcast/ Xfinity wants you to tell them its make and model; Make is Netgear Model is CG3000Dv2 if you tell them "N450-100NAS" for the model, they will tell you the device isn't supported. I didn't find this out until the third-party installer was at the house. He was trying to register the device as the "100NAS" when I looked a little closer at the box and saw CG3000Dv2. Once he gave them that info, there were no more issues.