USB TO TTL PL2303

The USB TO TTL PL2303 is a USB to serial (UART) adapter based on the Prolific PL2303 chip. Plugged into a computer, it appears as a virtual COM port and converts USB data into TTL-level TX and RX signals, so you can talk to microcontrollers, GPS and GSM modules and other devices with a serial port. It is also a low-cost way to flash and debug ESP8266, ESP32 and other boards that have no built-in USB port.

USB TO TTL PL2303 Specifications

• Chip: Prolific PL2303 USB to UART bridge
• Host connection: USB, shows up as a virtual COM port
• Signals: TXD, RXD and GND, plus power pins
• Logic: TTL-level serial (not RS-232 voltage levels)
• Drivers: Prolific driver on Windows; built-in support on Linux

USB TO TTL PL2303 Applications

• Flashing firmware to ESP8266 (ESP-01) and ESP32 modules
• Reading serial debug output from microcontrollers
• Sending AT commands to GPS, GSM and Bluetooth modules
• Serial console access to routers and embedded boards

What's in the Box

• 1 × PL2303 USB to TTL adapter

Tip: Cross the data lines: adapter TXD to the device RX, adapter RXD to the device TX, and connect GND to GND. Check the logic level your device needs (3.3 V or 5 V) before connecting, and if Windows shows an error for the port, install a Prolific driver version that supports your chip.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.