100% tested okay with test report and 45 days warranty we offer free replacement or repair of defective motherboards within period of warranty or refund within 7 days 
The contract for return of merchandise:
ALL the product sold from NOKOTION INDUSTRY (HK) Co., LIMITED.(The seller) had tested
the qualified products, but our company can not guarantee the damage under the transportation process, herein,NOKOTION  Electronics Co., Ltd. accept the return of merchandise which conforms with the contract for return merchandise as below:
1. the advance application: need the returned products part No. and quantity list in advance        
2. the returned merchandise term: need NOKOTION  bar No. , NOKOTION  label, testing report, the returned merchandise list and NOKOTION  sales No.
3. the returned sales’ acception: NOKOTION sales accept the returned merchandise list , then will give a acception list within 3 days
4. the returned merchandise check: NOKOTION  accept and check the returned merchandise according to sales list, NOKOTION  don't accept the returned
merchandise which don't conform with the sales list
5. the transportation cost: Only pay for one single trip of the delivery back here
6. warranty: 45 days . The seller don't hold any responsibility beyond 45 daysUpdate Date:2011/2/10 22:38:12