Any product that has been installed or has attempted to be installed. Any product that is returned to us without Aopen MP57-D original packaging, accessories, manuals, warranty cards, and all other items enclosed in the exact condition in which it was received. Any product that exhibits physical damage either to the product itself or to the original packing materials and accessories. Any product with a missing or altered serial number. Any product that has been submitted for a promotional rebate.[…]