1.metal usb flash drive 2.customer's logo 3.kinds of shape 4.high ... .6 and aboveDrivers No driver is required (exceptWindows98)Power No external power required Operating Current <104maOperating Relative Humidity 20% ~ 90% ... USB 2.0, and disk encryption encryption, USB interface, no drive, the plug and play, can be a hot swap USB ... 30% deposit, the ballanced amount before shipment. metal usb flash drive