The SH-U05A is the first product we have launched that supports both IIC, SPI and UART. The DSD TECH team has designed and released more than 30 different serial adapters. We are the world's most comprehensive supplier of serial adapters. Any of your serial adapter needs can be met here. Specification: Model: SH-U05A Main chip: WCH CH341F IIC/I2C Interface: SCL; SDA SPI Interface: MISO;MISI;SCK;CS2;CS1;CS0; UART Interface: TX,RX,GND;3V3;5V TTL Level: 3.3V USB interface: 2.0 About indicator LED: IIC/SPI LED: When operating in IIC/SPI mode, this LED will be solid on. UART LED: When operating in UART Serial mode, this LED will be solid on. RXD LED:The data transmission indicator flashes when there is data from the USB UART port. TXD LED:The data receiving indicator flashes when the USB UART port receives data. List of supported systems: 1,Windows xp,7,8,10,11 2,Linux 3,Mac OS You can download the driver directly from WCH's website Packing list: 1 X SH-U05A USB to SPI/IIC/TTL UART Adapter 1 X User Manual 1 X 6 PIN DuPont cable WARRANTY: DSD TECH offers a 1-year warranty and lifetime technical support for this USB to SPI IIC UART adapter?If you meet any question, Please contact us, We will fix your issue within 24 hours.

Warranty:DSD TECH provide a 1 year warranty and lifetime technical support for this USB to SPI/IIC/UART Adapter.if you have any questions, please feel free to contact us. We will respond within 24 hours. USB to TTL UART:Supports communication baud rate 50bps~2Mbps;Lead PIN:TX,RX,GND,VCC. USB to SPI:Supports memory programming for SPI interfaces, e.g. WINBOND's W25Q40BV. fixed rate of 2Mbps is not adjustable. USB to IIC:Supports programming of IIC EEPROMs, such as the AT24C01. 4 speeds adjustable: 20K, 100K, 400K, 750K. DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan.