---
product_id: 81856783
title: "5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter"
brand: "hiletgo"
price: "€ 21.83"
currency: EUR
in_stock: true
reviews_count: 8
category: "Hi Letgo"
url: https://www.desertcart.com.cy/products/81856783-5pcs-usb-to-serial-usb-to-ttl-ch340-module-stc
store_origin: CY
region: Cyprus
---

# LED indicators for PWR, TXD, RXD - instant status Compact 33x16mm size - space-saving design CH340G USB to TTL chip - seamless compatibility 5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter

**Brand:** hiletgo
**Price:** € 21.83
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and style — never miss a byte!

## Quick Answers

- **What is this?** 5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter by hiletgo
- **How much does it cost?** € 21.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/81856783-5pcs-usb-to-serial-usb-to-ttl-ch340-module-stc)

## Best For

- hiletgo enthusiasts

## Why This Product

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

## Key Features

- • **Ultra-Compact & Portable:** At just 33mm by 16mm, this module fits effortlessly into any workspace or project, perfect for on-the-go professionals and makers.
- • **Durable Premium Pin Headers:** High-grade yellow pins provide superior durability and a sleek look, standing out from generic black market alternatives.
- • **Versatile Voltage Selection:** Easily switch between 3.3V and 5V output with a simple jumper, ensuring perfect compatibility with diverse microcontrollers.
- • **Intuitive LED Status Indicators:** Power, transmit, and receive LEDs keep you informed in real-time, eliminating guesswork during debugging or programming.
- • **Plug & Play USB to TTL Conversion:** Effortlessly connect your MCU with the reliable CH340G chip, officially recommended by STC for flawless driver compatibility.

## Overview

The HiLetgo 5pcs USB to Serial USB to TTL CH340 Module is a compact, high-quality adapter featuring the original CH340G chip for seamless USB to TTL conversion. Designed for flawless compatibility with all MCU series, it includes intuitive LED indicators, selectable 3.3V/5V output, and durable yellow pin headers. Ideal for professionals and hobbyists needing reliable serial communication and microcontroller programming.

## Description

USB to TTL CH340 Module with STC Microcontroller Download Cable USB to Serial CH340 Module USB to TTL USB to RS232 STC downloader Perfectly compatible with all Series MCU, STC will not happen downloading problem due to different driver. 1. New original CH340G chips which recommended by STC official, much better than PL2303. The chips are USB to TTL chips, and will not appear incompatibilities due to different driver or caused by different computers. 2. High-quality, High-grade yellow pin, pin durable than the black market, beautiful; 3. Not only has the power light PWR, there TXD and RXD indicator, whether the product is easy to learn and intuitive to work in the absence of the instrument in the case; 4. The output transposon straight needle and looper optional; 5. 3 V3 and 5V by a short circuit risk selection; 6. Dimension: 33mm * 16mm;

Review: Worked natively on Linux to unbrick a Belkin RT3200 / Linksys E8450 - Worked great to unbrick a Belkin RT3200 / Linksys E8450 affected by OKD (OpenWRT kiss of death) The included cables have female and male ends and so did not directly connect into the JST PH connector (also male). I inserted the male ends from two cables together and then used the combined cable to connect the CH340 to the router. The ends connected to the JST PH connector were a loose fit.
Review: It worked to mate rxtxlite to my uSDX+ V2 - I used one of these to adapt my cellphone with the rxtxlite android app to my uSDX+ V2 qrp transceiver. Everything went together easily, and worked perfectly. Now I can change bands, modes, and adjust frequency with the phone instead of the buttons on the radio. Cheap and easy to do! I would recommend.

## Features

- HiLetgo USB to TTL CH340 Module
- STC downloader
- CH340 Module
- USB to TTL
- USB to RS232

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LZV1G6K |
| Best Sellers Rank | #2,799 in USB Cables |
| Customer Reviews | 4.4 4.4 out of 5 stars (234) |
| Date First Available | July 21, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.81 ounces |
| Item model number | 3-01-0459 |
| Manufacturer | HiLetgo |
| Package Dimensions | 4.53 x 3.39 x 0.98 inches |

## Product Details

- **Brand:** HiLetgo
- **Color:** Black
- **Compatible Devices:** Personal Computer
- **Connector Type:** USB
- **Finish Type:** Abs

## Images

![5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter - Image 1](https://m.media-amazon.com/images/I/61CqAYIgtyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked natively on Linux to unbrick a Belkin RT3200 / Linksys E8450
*by R***M on November 11, 2025*

Worked great to unbrick a Belkin RT3200 / Linksys E8450 affected by OKD (OpenWRT kiss of death) The included cables have female and male ends and so did not directly connect into the JST PH connector (also male). I inserted the male ends from two cables together and then used the combined cable to connect the CH340 to the router. The ends connected to the JST PH connector were a loose fit.

### ⭐⭐⭐⭐⭐ It worked to mate rxtxlite to my uSDX+ V2
*by G***H on August 29, 2023*

I used one of these to adapt my cellphone with the rxtxlite android app to my uSDX+ V2 qrp transceiver. Everything went together easily, and worked perfectly. Now I can change bands, modes, and adjust frequency with the phone instead of the buttons on the radio. Cheap and easy to do! I would recommend.

### ⭐⭐⭐⭐⭐ Jumper for +5V or +3.3V; reliable CH340
*by T***) on March 24, 2019*

These are by far my favorite USB/TTL devices. For one - there's a jumper that allows selection between +3.3 or +5V. The other cool feature is that they are using the CH340 chip. I've found this to be significantly more reliable on Windows as compared to the other commonly used chip - the SiLabs CP201x. The problem with the CP201x chips is with Windows - so many times after Windows updates are applied, the drivers are replaced with a default that causes them to no longer function until the proper drivers are manually re-installed from the manufacturer's web site. That's not the case with these using the CH340. They always seem to just work. (not an issue for linux, of course) I also like the fact that these devices have clear heat shrink tubing, protecting these devices (and your computer!) from stray wires or other things that inevitably fall on them during development and prototyping. As an extra bonus, M-F jumper wires are included; great for connecting to breadboard (but note that you'll need F-F jumpers if connecting directly to something like a Raspberry Pi) Note the default jumper setting connects the Tx/Rx pins as shipped; this allows for immediate operational verification using something like putty to confirm operation using serial loopback.

## Frequently Bought Together

- HiLetgo 5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter
- GenBasic 40 Piece Female to Female Jumper Wires (4 Inch)
- Monoprice 3-Feet USB A to mini-B 5pin 28/28AWG Cable (103896) Black

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-16*