---
product_id: 803464527
title: "– USB to TTL module CH343 Chip Isolation Type USB-C to Serial Module 6Mbps High-Speed Communication 3.3V 5V MCU Downloader No Need to Install Driver with Connection Cable Double C Cable"
brand: "youmile"
price: "¥5878"
currency: JPY
in_stock: true
category: "Youmile"
url: https://www.desertcart.jp/products/803464527-usb-to-ttl-module-ch343-chip-isolation-type-usb-c
store_origin: JP
region: Japan
---

# 6Mbps ultra-fast data rate Type-C plug & play interface Isolation design for EMI protection – USB to TTL module CH343 Chip Isolation Type USB-C to Serial Module 6Mbps High-Speed Communication 3.3V 5V MCU Downloader No Need to Install Driver with Connection Cable Double C Cable

**Brand:** youmile
**Price:** ¥5878
**Availability:** ✅ In Stock

## Summary

> 🚀 Power up your serial projects with speed, safety, and style!

## Quick Answers

- **What is this?** – USB to TTL module CH343 Chip Isolation Type USB-C to Serial Module 6Mbps High-Speed Communication 3.3V 5V MCU Downloader No Need to Install Driver with Connection Cable Double C Cable by youmile
- **How much does it cost?** ¥5878 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/803464527-usb-to-ttl-module-ch343-chip-isolation-type-usb-c)

## Best For

- youmile enthusiasts

## Why This Product

- Trusted youmile brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Blazing 6Mbps Speed:** Experience lightning-fast serial communication that keeps your projects ahead of the curve.
- • **Robust Isolation Shield:** Built-in isolation and protection circuits safeguard your devices from electromagnetic interference and voltage spikes.
- • **Dual Voltage Flexibility:** Easily switch between 3.3V and 5V logic levels to match any MCU or peripheral with a simple jumper cap.
- • **Intuitive Status Indicators:** Three-color LED lights provide real-time feedback on power, sending, and receiving—debugging made effortless.
- • **Seamless Type-C Connectivity:** Modern USB-C interface ensures hassle-free, driver-free setup on Windows 10/11 and full cross-platform support.

## Overview

The Youmile USB to TTL module features a high-speed CH343 chip delivering up to 6Mbps communication via a modern Type-C interface. Its isolation design protects against electromagnetic interference, ensuring stable data transfer. Compatible with Windows, Linux, and macOS, it supports driver-free operation on Windows 10/11. Dual voltage switching (3.3V/5V) and clear LED indicators make it a versatile and reliable tool for developers and engineers.

## Description

The isolated USB to TTL serial port module adopts high-speed CH343 serial port chip with a communication rate of up to 6Mbps.The module uses TYPE-C interface to connect to the computer. Onboard TVS and voltage regulator diodes protect USB and TTL serial ports.The perfect protection circuit makes the module durable and not easy to damage.Diodes are installed on both 5V and 3V3 voltage output ports. Although the output power is subject to certain restrictions, the reverse current protection of the diode can better prevent the module from being damaged by external voltage.The module itself also has a 500mA self-recovery insurance.The module has perfect protection functions and you can use it with confidence.SpecificationsProduct name: USB to TTL downloader (CH343 isolated type)Type: USB to TTL isolated communicationCommunication rate: 50bps-6Mbps, adaptive below 115200bps, supports common baud ratesCommunication level: DC 3.3V/5V, jumper cap switchInterface: Type COutput: 5V@200mA, 3.3V@150mASupported system: for Windows, for Linux, for macOSDriver: CDC/VCP, CDC can be driver-free for Windows10/11, high-speed communication VCP driverIndicator light: power light: blue send, indicator light: red, receive indicator light: greenFeatures: compact, isolated, high-speed, Type-CInterface description: 5V voltage output, using isolated power supply, low voltage accuracy, about 4.6V-5.5VPackage includes:1 x CH343 Isolation Type USB to TTL module1 x 10-pin Male and female connection cable1 x Type-C to Type-C cable

## Features

- What it does: The USB to TTL serial port module uses a high-speed CH343 serial port chip with a communication rate of up to 6Mbps.It is used to convert the computer's USB interface into a TTL level signal for communication and control with various devices
- Core serial port function: The module has built-in full-duplex serial port, automatic flow control and support for multiple data bits and baud rates, which is very suitable for complex serial communication tasks
- Isolation design: Effectively prevents electromagnetic interference and ensures stable and reliable data transmission
- Multi-system compatibility: for Windows, for Linux, for macOS, CDC can be driver-free in Windows 10/11, easy to use
- Clear status indication: Power, send, receive three-color indicator light, the working status is clear at a glance, easy to debug
- Dual voltage switching: 3.3V/5V jumper cap switching, adapt to different devices, high flexibility
- Package includes: 1 x CH343 Isolation Type USB to TTL module;1 x 10-pin Male and female connection cable;1 x Type-C to Type-C cable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FB8HG2YX |
| Best Sellers Rank | 85,389 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 263 in Serial Adapters |
| Brand | Youmile |
| Brand Name | Youmile |
| Country of Origin | China |
| Hardware Interface | USB |
| Hardware interface | USB |
| Item Weight | 50 Grams |
| Item weight | 50 Grams |
| Manufacturer | Youmile |
| Model Number | JK-YM-784A |

## Images

![– USB to TTL module CH343 Chip Isolation Type USB-C to Serial Module 6Mbps High-Speed Communication 3.3V 5V MCU Downloader No Need to Install Driver with Connection Cable Double C Cable - Image 1](https://m.media-amazon.com/images/I/61lUSHM4QIL.jpg)

## Available Options

This product comes in different **Color** options.

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**Shop now:** [https://www.desertcart.jp/products/803464527-usb-to-ttl-module-ch343-chip-isolation-type-usb-c](https://www.desertcart.jp/products/803464527-usb-to-ttl-module-ch343-chip-isolation-type-usb-c)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-04*