Specification:

Features:

🔌 USB to Serial Conversion

• Uses the reliable Prolific PL2303HX chipset for stable USB-to-serial communication.

• Converts USB signals to TTL-level UART (not RS232 voltage level) for direct microcontroller interfacing.

⚡ Dual Voltage Support

• Supports 3.3V and 5V logic levels — ideal for a wide range of devices.

• Selectable via onboard jumper or switch, depending on variant.

🔄 Real-Time Data Indicators

• TX (Transmit) and RX (Receive) LEDs allow easy debugging and communication status monitoring.

🔐 Built-in Protection

• Includes a 500 mA self-resettable fuse to protect your PC/laptop USB port from overcurrent situations.

• Ensures safe and reliable operation during flashing or communication.

🔧 Plug and Play

• No need for external power supply — powered directly through USB.

• Easy driver installation (PL2303 drivers available for Windows, Linux, macOS, Android OTG).

🧰 Versatile Pinout

• Comes with a standard 5-pin header: VCC, GND, TXD, RXD, RST.

• Connects easily to breadboards, microcontrollers, or embedded systems.

🛠 Compact and Durable Design

• Small form factor: fits easily into toolkits.

• Transparent heat-shrink sleeve provides insulation and protection while keeping the board visible.

🧑💻 Wide Compatibility

• Compatible with microcontrollers like Arduino, STM32, ESP8266, ESP32, Raspberry Pi (UART).

• Suitable for flashing firmware, serial monitoring, and debugging.

💻 Cross-Platform Support

• Compatible with:

  • Windows XP/7/8/10/11

  • Linux (Ubuntu, Raspbian, etc.)

  • macOS

  • Android (via OTG cable)

Description:

The KG211 USB to TTL Converter Adapter is a high-quality, compact module based on the Prolific PL2303HX chipset, designed to bridge communication between a USB interface and TTL (Transistor-Transistor Logic) serial devices. It provides a reliable and simple way to interface USB-enabled computers with microcontrollers, embedded systems, routers, or development boards that use UART for communication.

This adapter supports both 3.3V and 5V logic levels, making it incredibly versatile for a wide range of applications — from Arduino and ESP boards to STM32 and custom IoT devices. Whether you're flashing firmware, monitoring serial output, or sending commands to a device, this module ensures fast and dependable communication.

A key feature of the KG211 is its transparent heat-shrink sleeve, which not only insulates and protects the internal circuitry but also keeps the indicator LEDs visible. The TX and RX LEDs offer real-time visual feedback of data transmission and reception, helping developers troubleshoot and verify operation instantly.

With plug-and-play capability on Windows, Linux, macOS, and even Android (via OTG), the KG211 is ideal for hobbyists, engineers, and technicians working with serial devices. It also includes a 500mA self-resetting fuse, safeguarding your USB port from accidental overcurrent situations.

Thanks to its lightweight and portable design, it easily fits into any electronics toolkit, offering a simple, cost-effective solution for USB-to-serial communication needs in embedded development, device programming, and field diagnostics.