If your ISP is Comcast/Xfinity, save yourself a buck or two by using your own equipment. This unit is used but dependable; I have used it for about 3 years with Comcast. Selling now because I switched ISPs. Delivery available only locally (Boulder-Niwot-Longmont), no mail orders. Comes with a dedicated password that is printed on a sticker on the unit, along with a QR code which you can scan to connect.