1、USB BUS ADAPTER: USB TO UART/I2C/SPI/JTAG is a high speed USB bus adapter, supporting USB to 2 UART, USB to 1 UART+1 I2C+1 SPI, USB to 1 UART+1 JTAG. 2、UART INTERFACE: USB to UART I2C converter supports 2 way high speed UART interface, baud rate up to 9Mbps, CTS and RTS hardware automatically. 3、I2C INTERFACE: Industrial isolated USB converter supports 1 channel I2C interface, which is convenient to programmed to control Organic Light Emitting Diode, sensors and other I2C devices. 4、SPI INTERFACE: USB to SPI JTAG converter supports 1 channel SPI interface with 2 chip select signal pins, which can be used to control 2 channel SPI slave devices through computer time sharing. 5、JTAG INTERFACE: USB to SPI JTAG converter supports 1 way JTAG interface, can be used with open source for Openocd to do debugging tests (due to the limited functionality of the actual test devices and software, the user must evaluate the test specific devices and software use).