--- product_id: 81856783 title: "5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter" brand: "hiletgo" price: "69.42 DT" currency: TND in_stock: true reviews_count: 8 category: "Hi Letgo" url: https://www.desertcart.tn/products/81856783-5pcs-usb-to-serial-usb-to-ttl-ch340-module-stc store_origin: TN region: Tunisia --- # Selectable 3.3V/5V power output via jumper LED indicators for power, TXD, and RXD status CH340G chip for seamless USB to TTL conversion 5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter **Brand:** hiletgo **Price:** 69.42 DT **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?** 69.42 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Compact & Versatile:** Slim 33mm x 16mm footprint fits effortlessly into your toolkit, supporting USB to TTL and RS232 serial communication for broad microcontroller compatibility. - • **Durable & Stylish Build:** Premium yellow pins offer superior durability and a sleek look that stands out in any professional workspace or maker setup. - • **Instant Visual Feedback:** Integrated PWR, TXD, and RXD LEDs provide real-time status, so you always know your data flow and power state without extra tools. - • **Rock-Solid Compatibility:** Officially recommended CH340G chip ensures hassle-free driver support across all major OS, eliminating frustrating connection issues. - • **Power Flexibility at Your Fingertips:** Easily switch between 3.3V and 5V output with a simple jumper—perfect for diverse MCU projects without extra adapters. ## Overview The HiLetgo 5pcs USB to Serial USB to TTL CH340 Module pack features the reliable CH340G chip, officially endorsed by STC for flawless MCU compatibility. With selectable 3.3V/5V output, clear LED indicators, and durable yellow pins, these compact modules deliver dependable serial communication for professional developers and makers alike. Ideal for seamless microcontroller programming and debugging, they ensure your workflow stays smooth and interruption-free. ## 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: Jumper for +5V or +3.3V; reliable CH340 - 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. 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. ## 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 | #2,449 in USB Cables | | Brand | HiLetgo | | Color | Black | | Compatible Devices | Personal Computer | | Connector Type | USB | | Customer Reviews | 4.4 out of 5 stars 240 Reviews | | Finish | Abs | | Finish Type | Abs | | Input Voltage | 5 volts | | Item Weight | 0.02 kg | | Manufacturer | HiLetgo | | Mfr Part Number | 3-01-0459 | | Model Number | 3-01-0459 | | Number of Items | 5 | | Number of Ports | 1 | | Package Quantity | 1 | | Power Plug Type | No Plug | | UPC | 702082656754 | | Unit Count | 5 Count | ## 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) ![5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter - Image 2](https://m.media-amazon.com/images/I/51MWjvui4eL.jpg) ![5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter - Image 3](https://m.media-amazon.com/images/I/51jf3zZEV6L.jpg) ![5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter - Image 4](https://m.media-amazon.com/images/I/61y7GXCKNPL.jpg) ![5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter - Image 5](https://m.media-amazon.com/images/I/51yEeipLT3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ 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. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/81856783-5pcs-usb-to-serial-usb-to-ttl-ch340-module-stc](https://www.desertcart.tn/products/81856783-5pcs-usb-to-serial-usb-to-ttl-ch340-module-stc) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-20*