Features: Brand new and high quality Easy to control and debug various interfaces devices for PC, Supports USB to 2ch UART, or USB to 1ch UART + 1ch I2C + 1ch SPI, or USB to 1ch UART + 1ch JTAG. Supports 2ch high-speed UART interfaces, up to 9Mbps, with RTShardware automatic flow control. Supports 1ch I2C interfaces, for easy operating EEPROM through the host computer or programming I2C devices such as sensor. Supports 1ch SPI interfaces, with 2x chip select signal pins, capable of controlling 2ch SPI slave devices at different times. Supports 1ch JTAG interfaces, can be used with OpenOCD for debugging and testing. Onboards 3.3V and 5V level conversion circuit for switching the operating level of the communication interfaces, better compatibility. Specifications: Material:Aluminium Alloy Size:Approx.86x48mm/3.39x1.89inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x USB to UART/I2C/SPI/JTAG Converter