... chipset.B Grade:non-brand chipset.Both A and B with full capacity,Samsung chip is the best.Certificate CE,ROHS,FCCMemory ... program for Windows98 is needed)InterfaceUSB2.0 (also compatible with USB1.1 and 1.0),USB3.0Shock resistance1000GFeatureplug and play ... ,Auto-run function (optional), can be coded with password and bootableRead Speed1.1: 1Mbps 2.0: 8MbpsWrite ...