DollaTek CH341A USB to UART/IIC/SPI/TTL/ISP adapter EPP/MEM Parallel converter Onboard Operating Indicator Lamp Board Module

Support USB to parallel printer port and EPP or MEM parallel port ; Support USB to UART, I2C, SPI interface; The output voltage and the signal level can be selected by 3.3V or 5V Have UART and SPI/I2C working status indicator light.