You may only return an unopened product. If you open it and it does not work, you may not return or exchange it. If the company that manufactured the product will not repair or replace it, you are out of luck. I purchased an Arris SBG 6580 cable modem. It was listed as a "remanufactured" product but it was a return that was not re-set to factory settings before boxing it up for resale. I had to manually reset the unit for it to operate. The built in WiFi in unstable. It cannot be fixed. I wasted a significant amount of time any money learning that Woot is not a retail channel that I ever want to use again. Ebay provides a better guarantee.