1, Dual adapter card 2.Support :TF / Micro SD,WINDOWS 98 /ME/2000/XP/Vista//Mac QS 3,USB2.0version 4.OEM welcome Dual adapter card with double chipUSB 2.0 Card readerHigh Speed USB2.0, Compliance with USB 1.1support TF / Micro SD,WINDOWS 98 /ME/2000/XP/Vista//Mac QSPlug and play ,high speed data tranferUSB bus power Supply ,No external power supply requiredSupport high speed card, Slim size ,easy ...