, RESELLER shall promptly notify ZHONE in writing of such nonconformance, but in no event later than ten (10) days after the end of the Warranty Period for those Products, and shall provide such details of the nonconformance as ZHONE reasonably requests. RESELLER will, upon the request of ZHONE and in accordance with ZHONEs standard return procedures, return such Products to ZHONE at RESELLER's expense and risk