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USB to TTL Serial Adapter Module — CH340G / FT232RL, 5V / 3.3V, for Arduino & MCU Programming

USB to TTL Serial Adapter Module CH340G / FT232RL, 5V / 3.3V, for Arduino & MCU Programming

$8.96 USD

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USB to TTL Serial Adapter Module — CH340G / FT232RL, 5V / 3.3V

This USB to TTL serial adapter converts USB to a 3.3V or 5V UART interface, enabling PC communication with Arduino boards, ESP8266/ESP32 modules, and any UART-capable microcontroller. Available with CH340G (cost-effective, Windows/macOS/Linux driver) or FT232RL (FTDI, premium compatibility) USB-to-serial IC. The selectable 3.3V / 5V output voltage makes it compatible with both 3.3V and 5V logic devices.

Key Specifications

Parameter	Value
USB-to-Serial IC	CH340G or FT232RL (variant dependent)
Output Voltage	3.3V or 5V (jumper selectable)
UART Pins	TX, RX, VCC, GND (+ DTR, RTS on some variants)
Operating Temperature	-40°C to +85°C
OS Support	Windows, macOS, Linux

CH340G vs FT232RL — Which to Choose?

Feature	CH340G	FT232RL
Cost	Lower	Higher
Driver	CH340 (free download)
Compatibility	Good (Win/Mac/Linux)	Excellent (FTDI VCP driver)
Max Baud Rate	2Mbps	3Mbps
Best For	General use, Arduino	Industrial, high-reliability

Why Choose This Adapter?

✅ 3.3V / 5V selectable — compatible with both 3.3V (ESP8266, ESP32) and 5V (Arduino) devices
✅ -40°C to +85°C — reliable in demanding environments
✅ DTR pin available — enables auto-reset for Arduino bootloader programming
✅ Compact module — fits in toolbox for field use