1) usb 2.0 port 2) hot plug-and play 3) high data transfer speed Earch on line, 4, electronic catalog 5, recruit online recruitment 6, product publicity or publicity of laws and regulations on line 7, a red-letter day souvenir, etc. Product features:1, do not delete the file;2, file encryption;3, pnp plug and play. Also, we can accept oem orders from customer designs or brands. 1) usb 2.0 port 2