No Return / No Exchange / No Warranty.Please check the IC Number and match with your existing Product.Genuine and Proper IC.Super Quality.Every product crosscheck Before Shipping.RT8209MGQW RT8209M ( A5= ) ( A5= ** ) ICA5-DD, A5-CK, A5-DF, A5-DB, A5-CK, A5- ICA5=DD, A5=CK, A5=DF, A5=DB, A5=CK, A5= I..