30 Day Warranty - Free ShippingThis Modem does NOT work with Comcast! BEFORE PURCHASING PLEASE CHECK WITH YOUR CABLE INTERNET PROVIDER TO MAKE SURE IT IS COMPATIBLE WITH THEIR SYSTEM. WE CANNOT ACCEPT RETURNS DUE TO NON-COMPATIBILITY. Refurbished with AC cord and Ethernet cable, packed in individual boxes. 30 day warranty excluding power surge. Datasheet available HERE. We have been selling and servicing Cable TV equipment since 1982. Should you have any questions, or need help, please send a message through E-bay messages, and we will help you with any concerns. We pride ourselves in the quality of the products that we sell. We know that you will be pleased with this purchase. However, if for any reason you are not, let us know so we may have the opportunity to correct it..