STM32-H103 board is entry level development board for the new ARM

Cortex M3 family of devices produced by ST Microelectronics Inc.

With STM32-H103 you can explore the features of STM32 family on

budged, the board have everything necessary to build simple applications:

USB port where power is taken and power supply circuit, reset and

oscillator circuits, JTAG port for programming and debugging, two status

LEDs and user button.

Although very simple this board will allow you to easily build USB

application like PC mouse, USB mass storage device, USB Audio class

device, USB to Virtual RS232 port. There are plenty of GPIOs on extension

headers where you can connect your additional circuits.