... 8.6 and above,4. Transfer Rate for the USB pen, High Speed USB 2.05. Data transfer speed for the USB pen, 15MB/s-21MB ... /s for read, 5MB/s-8MB/s for write6. Compatibility for the USB pen ... -and-play, no external power supply required,USB bus powered12. Provide OEM service, logo printing, data preload, autorun, customized programming, etc.13 ...