USB electronic disk

The utility model relates to a USB electronic disk comprising a USB connector, a USB controller, a mi, a flash memory and a power circuit, which is characterized in that in the hardware structure the USB controller and a microprocessor together adopt a single chip with a USB controller to form an independent hardware unit; wherein the single chip is connected with a flash memory chip and the USB connector respectively and the USB connector is connected on a mainframe through a bus cable. The utility model has the advantage that the hardware design is simple and the integration degree is high and the number of the components is obviously less than the number of the congeneric products; while in the software layer adopts the standard instruction set of an operating system, thus a good integration with the operational system is realized and, in particular under the system of Windows Me or Windows 2000 in particular, no driving program is needed to be installed, really realizing the aim of plug-and-play. Thanks to the brief design and the integrated software, the synthetic performance of the utility model is superior to the other congeneric products.