Usb to TTL Converter Mini

This module uses the CH340C IC, which does not require an external crystal, making the design smaller and more stable. The Type-C port ensures easy plug-in (reversible cable) and better durability compared to Micro USB versions.
The board in your image clearly shows labeled pins:
GND, +5V, TXD, RXD, DTR, 3V3 — making it very beginner-friendly and perfect for quick connections.
Its compact size and black PCB give it a clean, premium look—great for both prototyping and product listing on your site.
⚙️ Key Features
✅ USB Type-C interface (modern & durable)
🔌 Based on CH340C (no crystal needed)
🔁 Supports 3.3V & 5V output
⚡ Stable UART communication (up to 2Mbps)
📦 Ultra-compact size (~20mm range)
🖤 Black PCB (premium look)
🔄 Plug & Play (drivers auto install in most OS)
🔌 Pin Configuration
Pin
Function
GND
Ground
+5V
5V Output
3V3
3.3V Output
TXD
Transmit
RXD
Receive
DTR
Auto reset (ESP flashing)
🔧 Applications
ESP32 / ESP8266 Programming
Arduino Upload & Serial Monitor
Firmware flashing
UART Debugging
IoT Development