The CH340 chip is used by a number of Arduino compatible boards to provide USB connectivity, you may need to install a driver, don’t panic, it’s easier than falling off a log, and much less painful.

Windows

(Manufacturer’s Chinese Info Link)

1. Download the Windows CH340 Driver
2. Unzip the file
3. Run the installer which you unzipped
4. In the Arduino IDE when the CH340 is connected you will see a COM Port in the Tools > Serial Port menu, the COM number for your device may vary depending on your system.
   

• Firstly, Open the device manager, right click on the FTDI and click on Update drivers. Then click on Browse My computer for drivers and then just select the main Folder where you have extracted the drivers. And then hit ok, make sure Include Subfolder is ticked. And now click on Next and it will install first set of drivers.
• FTDI USB Serial Port Driver 2.12.26 Windows 10 Anniversary Update 64-bit. FTDI FT601 USB 3.0 Bridge Device Driver 1.2.0.6 Windows 8 18 downloads.

Older Windows Driver Version and Instructions

Ftdi free download - FTDI D2XX Recovery PID for XP, Universal Box, USB High Speed Serial Converter, and many more programs. FTDI FT8U2XX Device. Fix COM port lock.

1. Download the Windows CH340 Driver
   
2. Unzip the folder.
   
3. If you are running a 64Bit Windows: – run the SETUP_64.EXE installer.
   
4. If you are running a 32Bit Windows: – run the SETUP_32.EXE installer.
   
5. If you don’t know, try the 64 bit and if it doesn’t work, the 32 bit.
   
6. In the Arduino IDE when the CH340 is connected you will see a COM Port in the Tools > Serial Port menu, the COM number for your device may vary depending on your system.
   

Macintosh

(Manufacturer’s Chinese Info Link)

The following github has up to day pkg files for 1.3, 1.4 and 1.5 at time of writing, thanks to Joshua Wallis for bringing this to my attention…

Direct Download Links (from the github repo above):

See the github link above for installation instructions if you need them.

Previous macinstosh downloads if the above doesn’t work for you…

(V1.3) Download the CH340 Macintosh Signed Driver for Mavericks (10.9), Yosemite (10.10) and El Capitan (10.11) and Sierra (10.12)

Inside the zip file you will find a PDF and a “pkg” file, short version, double click the pkg file, the PDF has some extra information.

OSX Sierra (10.12) Note

A kindly user, Maarten Segers reports

FYI, the driver documented here WILL crash on OSX Sierra.

I can personally not test on MacOS and can not vouch for the above drivers at github, but there you go.

See uninstalling information at the bottom of the page if the driver causes problems for you.

Here is an older version of the Mac driver, NOT FOR 10.12 Sierra

(V1.0) Download the CH340 Macintosh Signed Driver for Mavericks (10.9), Yosemite (10.10) and El Capitan (10.11)

Linux

(Manufacturer’s Chinese Info Link)

Drivers are almost certainly built into your Linux kernel already and it will probably just work as soon as you plug it in. If not you can download the Linux CH340 Driver (but I’d recommend just upgrading your Linux install so that you get the “built in” one).

Uninstalling From Macinstosh

A couple of Mac users have said “the driver crashes my mac Sierra how do I uninstall”.

Firstly regards the crash make sure you installed the 1.3 version of the driver, not the old one. You could download it directly from the Manufacturers Website in case they have issued an update since I wrote this page.

Secondly a quick google search reveals that this is how you uninstall:

1. Open a terminal and type: cd /Library/Extensions/
2. Verify that the .kext file is present: ls | grep usbserial.kext
3. Output should be: usbserial.kext
4. Then type: sudo rm -R usbserial.kext
5. Verify that the .kext file has been removed: ls | grep usbserial.kext
6. Output should be empty.
7. After you should remove the files stored in receipts folder: cd /private/var/db/receipts/
8. Find the enties: ls | grep usbserial*
9. Output should be: codebender.cc.ch34xinstaller.usbserial.pkg.bom codebender.cc.ch34xinstaller.usbserial.pkg.plist
10. Remove each one of the files of the above list: sudo rm -r filename`

Having an issue with your FTDI device driver? Don’t worry. You can fix the driver issue by updating FTDI driver in your computer.

What is a FTDI driver?

Future Technology Devices International is commonly known as FTDI, a company specializing in USB technology. FTDI driver is a essential software that communicates between your computer system and FTDI hardware device.

How to download or update FTDI driver?

There are three ways to download or update your FTDI driver for Windows 10/8/7:

Method 1: Download FTDI driver manually

You can manually download the FTDI driver from FTDI website. Here’s how to do it:

1) Go to FTDI driver download center.

2) Select and find the device driver that you want, and click the driver that is matched with your computer system.

3) Exact the downloaded file, install it in your computer.

4) Follow the on-screen instructions to finish installing the driver.

This requires time and computer skills.

Method 2: Update FTDI driver automatically

If you don’t have time or patience to manually download the FTDI driver, you can do it automatically with Driver Easy.

Driver Easy will automatically recognize your system and find the correct drivers for it.You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making mistake when installing.

You can update your drivers automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version, it takes just 2 clicks (and you will get full support and a 30-day money back guarantee).

1) Downloadand install Driver Easy.

2) Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.

3) Click the Update button next to the flagged device to automatically download the correct version of the driver (you can do this with the FREE version), and install the driver in your computer.

Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system (this requires the Pro version – you’ll be prompted to upgrade when you click Update All).

4) After updating, restart your computer to take effect.

This is a rather easy method, isn’t it?!

Method 3: Update FTDI driver in Device Manager

You can also update your FTDI device driver in Device Manager, where you can view and manage hardware device and its driver software in your Windows computer.

Ftdi Port Devices Driver Download Windows 7

1) Make sure you’ve connected your device to your Windows computer.

2) On your keyboard, press the Windows logo keyand R at the same time to invoke the Run box.

Ftdi Port Devices Driver Download Win 7

3) Type devmgmt.msc and click OK.

4) In Device Manager, double click the device category that your device belongs to (it’s normally Ports (COM & LPT) or Universal Serial Bus controllers) to expand it.

5) Right click on your device, and select Update driver.

6) Choose Search automatically for updated driver software.

7) Follow the on-screen instructions to finish.

Ftdi Windows Drivers

After updating, restart your computer.

Ftdi Port Driver

That’s it. Hope this post helps in downloading or updating your FTDI drivers in Windows.

Ftdi Port Devices Driver Download

If you have any questions, feel free to add a comment below.