This is a small USB to UART conversion board featuring a PL2303TA USB to serial bridge chip, RS/TX indication LEDS and a Micro-USB connector. We also stock a USB-C version and a version with a USB-A connector. Note: the module is compatible with TTL level only, to avoid damage please do not directly connect to an RS232 circuit. Features * PL2303TA onboard (the latest device, compatible with PL2303HXA) * Supports windows XP/7/8/8.1/10 (Does not support Windows 11) * 3 power mode: 5V output, 3.3V output, or powered by target board (3.3V-5V) * 3 LEDs: TXD LED, RXD LED, POWER LED Pinout When working with an MCU such as the ATMEGA 328: * VCCIO ↔ 3.3V or 5V output (the module is powered from USB, onboard jumper should be shorted to 3.3V or 5V) * GND ↔ GND * TXD ↔ MCU.RX (signal direction: MCU.RX << PL2303 << PC.TX) * RXD ↔ MCU.TX (signal direction: MCU.TX >> PL2303 >> PC.RX) Resources * Waveshare Wiki Package Contents * 1x PL2303 USB UART Board (Micro-USB) Cable not included https://elecena.pl/product/22724134/pl2303-usb-uart-board-micro-usb-discontinued 2023-03-07 https://elecena.pl/product/22724134/pl2303-usb-uart-board-micro-usb-discontinued 2024-09-19