A USB device, integrated circuit, smart card and method are disclosed. A
USB transceiver is connected to a data interface and operable at a
respective low speed and full speed configuration. A processor as a USB
device controller is operatively connected to the low speed USB
transceiver and full speed USB transceiver and operable for transmitting
a different device descriptor to a USB host for performing an enumeration
depending on whether a low speed or high speed operation is chosen.