... chipset.Both A and B with full capacity,as we know samsung chipset is the best one.USB compareReading speedWriting speedBad rateA ... with One year's guaranteen, if there is any quality problems within one year, we will offer the free maintenance service.2 ... for the loss.1.USB Items are only shipped after payment is received2.We ship item via EMS,DHL,UPS,FEDEX,TNT or ...