Check the listing for details. Waveshare USB To UART/I2C/SPI/JTAG Converter Support Multiple Interfaces 3.3V/5V. Condition: New. Listed at 22.61 USD. DESCRIPTION USB To UART/I2C/SPI/JTAG Converter, Supports Multiple Interfaces, Compatible With 3.3V And 5V, Multiple Protection Circuits, Multiple Systems Support, Aluminum Alloy Case, Wall-Mount & Rail-Mount SupportUSB TO UART/I2C/SPI/JTAGSupports Multiple Interfaces | Compatible With 3.3V And 5V Features At A GlanceSupports USB to 2-ch UART, or USB to 1-ch UART + 1-ch I2C + 1-ch SPI, or USB to 1-ch UART + 1-ch JTAGSupports 2-ch high-speed UART interfaces, up to 9Mbps baud rate, with CTS and RTS hardware automatic flow controlSupports 1-ch I2C interface, for easy operating EEPROM through the host computer or programming I2C devices such as OLED and sensorSupports 1-ch SPI interface, with 2x chip select signal pins, capable of controlling 2-ch SPI slave devices at different timesSupports 1-ch JTAG interface, can be used with OpenOCD for debugging and testing (Due to the limited testing of chips and software functions, users need to evaluate and test this function on their own)Onboard 3.3V and 5V level conversion circuit for switching the operating level of the communication interface, better compatibilityOnboard resettable fuse and ESD protection circuit, provides over-current/over-voltage proof, safe and stable communicationAluminium alloy case with oxidation dull-polish surface, CNC process opening, solid and durable, well-craftedHigh-quality USB-B and DC connectors, smooth plug & pull, durable and reliable, with anti-reverse protectionSpecificationsHOST INTERFACEUSBPOWER SUPPLYUSB port, 5VOPERATING LEVEL3.3V/5V (select via onboard switch)USBConnectorUSB-BInterface protectionResettable fuse, ESD protectionUARTChannel2 (the red DIP switch needs to be set to M0 mode)Connector6PIN IDC connectorBaud rate1200bps～9 MbpsHardware flow controlCTS and RTSI2CChannel1 (the red DIP switch needs to be set to M1/M2 mode)Connector12PIN IDC connector (the first 4 pins are I2C)SPIChannel1 (the red DIP switch needs to be set to M1/M2 mode)Connector12PIN IDC connector (the last 8 pins are SPI)JTAGChannel1 (the red DIP switch needs to be set to M3 mode)Connector12PIN IDC connector (the last 8 pins are JTAG)DIMENSIONS86.0×48.0×27.6mmPrimary FunctionEasy To Control And Debug Various Interface Devices Via PC, Supports USB To 2-Ch UART, Or USB To 1-Ch UART + 1-Ch I2C + 1-Ch SPI, Or USB To 1-Ch UART + 1-Ch JTAGMulti System SupportSupports Win7/8/8.1/10/11, Linux, Etc.Application EnvironmentsSuitable For College Students, Technical Engineers, Electronic Enthusiasts, Or DIY Makers For Learning And DebuggingSupports Various InterfacesSupports multiple communication debugging interfaces, most of which can be used at the same time Small and compact, easy to installFlexible installation, suitable for various devices Reserved screw holesEasy to mount, industrial metal case, rugged & durableInterface And Mode Description INDICATOR INTRODUCTIONPWRpower indicator, lights up while the USB is connected and voltage is detectedRXD1UART1 receiving indicator, lights up when the device port sends data backTXD1UART1 sending indicator, lights up when the USB port sends dataRXD0UART0 receiving indicator, lights up when the device port sends data backTXD0UART0 sending indicator, lights up when the USB port sends dataProduct ShowOutline Dimensions* The above dimensions are measured manually. there is about 1mm error.Resources & Services * Resources for different product may vary, please check the wiki page to confirm the actually provided resources. PACKAGE CONTENT Weight: 0.17 kgUSB TO UART/I2C/SPI/JTAG x1USB type A to type B cable ~1.2m x112PIN cable ~20cm x16PIN cable ~20cm (2PCS) x1