Open Debugger is a set of programming tools developed for STM’s microcontroller series and for TI’s CC1x, CC2x and CC3x series SoCs. An MCU can be programmed quickly and debugged easily with it. In addition, SinoVoip ‘s board has a USB to serial port, which is a common interface for embedded development. It also has a USB 2.0 hub that makes it easy to expand with other USB devices.