CH340 Windows 10 Driver Download

CH340 Windows 10 driver download

Download latest version of verified & working Windows 10 driver for CH340, CH340G USB to Serial converter. Tested with Arduino, ESP2866, Wemos D1 and other boards.

CH340 driver for Windows 10

Driver details

CH340, CH340G & CH341 (USB-SERIAL chip) V3.5 Driver Version = 2019-01-30, 3.5.2019.1 This file was scanned with VirusTotal on 2026-01-14 19:31:47 UTC. SHA-256 Checksum: 3624cf160343c2bfcf8fff28b28b1ca42f10734943bc0517be8a61bfc0e353fd.

What is CH340 and Why Do You Need This Driver?

Have you ever bought an Arduino board online for $3 and wondered why it doesn’t work right away? The answer is simple: it uses a CH340 chip instead of the expensive FTDI chip found in official Arduino boards.

What Exactly is the CH340?

The CH340 (and its variants CH340G, CH340C, CH340E) is a USB to Serial converter chip made by a Chinese company called WCH.

Here’s what makes it popular:

• Super cheap – Costs less than $0.20 per chip (compare that to $4+ for FTDI chips!)
• Works well enough for hobbyist projects
• Widely used in budget Arduino clones, ESP8266 modules, and development boards
• Same functionality as expensive alternatives for basic use

Which Devices Use CH340?

You’ll find CH340 chips in tons of popular boards:

• Arduino clones – Arduino Nano, Pro Mini, Uno (non-official versions)
• ESP8266 boards – NodeMCU, Wemos D1 Mini, ESP-01 programmer boards
• ESP32 boards – Many development boards use CH340
• USB to TTL converters – Standalone programming modules
• 3D printer controllers – Some use CH340 for USB connection

If you bought your Arduino or ESP board from AliExpress, Amazon (third-party sellers), or eBay for under $5, there’s a 90% chance it has a CH340 chip.

How Do You Know You Need This Driver?

Windows won’t recognize your CH340 device without the proper driver. Here are the telltale signs:

🔴 Common symptoms:

• You plug in your Arduino and nothing happens
• Device Manager shows “Unknown Device” with a yellow exclamation mark
• You see “USB2.0-Serial” listed under “Other Devices”
• Arduino IDE doesn’t show any COM port in the Tools menu
• Upload fails with “Port not found” or “Access denied” errors
• The device connects then immediately disconnects in a loop

Installing the CH340 driver fixes all these issues in about 2 minutes!

Which Windows Versions Are Supported?

This driver works on:

• Windows 11 (latest)
• Windows 10 (all versions)
• Windows 8 / 8.1
• Windows 7 (SP1 and later)

Note: This guide focuses on Windows 10 and 11, which are the most common. The steps are nearly identical for Windows 7 and 8.

Quick Compatibility Check

Before we start, let’s make sure you actually need this driver:

✅ You NEED this driver if:

• Your Arduino/ESP board cost less than $10
• The board has a small rectangular chip near the USB port (that’s the CH340)
• Device Manager shows “USB2.0-Serial” as unknown
• You bought from budget sellers on AliExpress, eBay or Amazon

❌ You DON’T need this driver if:

• You have an official Arduino board (they use different chips)
• Your device already shows up as a COM port in Device Manager
• You’re using Mac or Linux (different drivers needed)

Now that you know what CH340 is and why you need the driver, let’s get it installed!

CH340 Windows 10 driver installation

Open Device Manager – right mouse click on USB Serial, then left click Update Driver …

open the directory with downloaded & extracted CH341SER.zip driver

Finished, Close

CH340 driver installed and working

How to Verify the Driver is Working Correctly

So the installation said “success” – but how do you know it’s actually working? Let’s test everything properly.