Features: 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). specification:Item Type:USB to UART I2C SPI JTAG Converter Material: Aluminum Alloy Power Supply Voltage: USB Port, 5V Operating Current: 55mA to 65mA Operating Level: 3.3V/5V (Switching Through the Switch) Operating Temperature: -40 to 85 Operating System: for Linux, for Windows 11 / 10 / 8.1 / 8 / 7 Interface: USB B Type Interface Interface Protection: Self Recovery Fuse, Esd Static Protection Support Channel: 2 Way (Red Double Switch Must Be Set to M0 Mode) Interface: 6PIN Anti Reverse Connector Communicate Rate: 1200bps to 9Mbps (M0 Mode); 1200bps to 7.5Mbps (M1/M2/M3 Mode) Hardware Flows Control: CTS and RTS Support Channel: 1 Channel (Red Dual Switch Must Be Set to M1/M2 Mode) Interface: 12PIN Anti Reverse Connector (The First 4 Pins are I2C) Supported Channels: 1 Channel (Red Dual Switch Must Be Set to M1/M2 mode) Interface: 12PIN Anti Reverse Connector (The Last 8 pins are SPI) Supported Channels: 1 Channel (Red Double Switch Must Be Set to M3 mode) Interface: 12PIN Anti Reverse Connector (The Last 8 Pins are JTAG) PackageList:1 x USB to UART I2C SPI JTAG Converter 1 x USB Cable 1 x 12pin Cable 2 x 6pin Cable