... special design, fully custom 256MB-32GB fast speed of read new model of USB pen, ball pen USB driver, USB pen stick ... ) USB Specification 2.0 compatible with USB 1.15) Plug-and play; no external power supply required, USB bus-powered6) Capacity ... ,520816544609516GB*14,4769,5243,2083,0401,6321,08812,190 Package new model of USB pen, ball pen USB driver, USB pen stick ...