No Return / No Exchange Policy.Please check model Number and match with your Product.Generic and Proper FanSuper Quality.Every product cross check Before Shipping.Compatible withAcer Aspire one 756 V5-171, V5 171, V5-131, V5 131Acer Aspire ALL IN ONE 756Aspire One AO 756 V5-131 V5-171 Chromebook C71..