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.

1. Meilhaus Electronic Port Devices Driver Download Free
2. Meilhaus Electronic Port Devices Driver Download Pc

Easy Plug&Play installation and CAN bus device connection. USB CAN adapter can be controlled over serial port using simple ASCII commands. Versions -SI: 2500 V galvanic isolation on CAN bus. Design with ARM Cortex-M0 32 bit microcontroller and the USB to UART chip. Drivers provided for Windows and Linux OS.

Windows

(Manufacturer’s Chinese Info Link)

1. For CMI873x or CMI876x series, C-Media no longer support Win10 driver. For CMI878x, CM88xx, or USB Audio series, please contact your product vendor to get customized Win10 driver. However, if your product didn't apply customized driver when you purchased, you can then just use Win10 in box standard driver.
2. Download the Windows CH340 Driver; Unzip the file; Run the installer which you unzipped; 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. Older Windows Driver Version and Instructions. Download the Windows CH340 Driver; Unzip.
3. For this reason, the firm Meilhaus Electronic GmbH feels obliged to point out that they cannot be take on neither any warranty (apart from the claims for warranty as agreed) nor legal responsibility or liability for consequences caused by incorrect instructions. We would appreciate it if you inform us about any possible mistakes.

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.
   

Older Windows Driver Version and Instructions

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…

Meilhaus Electronic Port Devices Driver Download Free

(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.

Meilhaus Electronic Port Devices Driver Download Pc

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`

• August 22, 2019 2.9.8

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.9.8	Released August 22, 2019	Type ZIP	Filesize 3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 controller Graphics card with 24 or 32 bit Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Added several internal interfaces for particular sensors (J003).

• January 25, 2019 2.9.6

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.9.6	Released January 25, 2019	Type ZIP	Filesize 3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 controller Graphics card with 24 or 32 bit Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Added missing Tonemapping Auto property.

• May 4, 2018 2.9.5

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.9.5	Released May 4, 2018	Type ZIP	Filesize 3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 controller Graphics card with 24 or 32 bit Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Enabled tonemapping for 8bit video formats, e.g. Y800, RGB24 and RGB32.

• November 21, 2017 2.9.4

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.9.4	Released November 21, 2017	Type ZIP	Filesize 3.2MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Repaired not working J003 mono sensor pattern fix on particular video formats. This driver version is the last that works in Windows XP.

• January 9, 2017 2.9.3

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.9.3	Released January 9, 2017	Type ZIP	Filesize 3.2MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Added a pattern fix for J003 mono sensors.

• January 9, 2017 2.9.1

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.9.1	Released January 9, 2017	Type ZIP	Filesize 3.2MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Fixed the driver signature Code 52 error on new Windows 10 v1607 systems.

• January 15, 2016 2.8.9

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.8.9	Released January 15, 2016	Type ZIP	Filesize 2.3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Changed certificates so that the driver can also be installed in Vista.

• November 9, 2015 2.8.7

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.8.7	Released November 9, 2015	Type ZIP	Filesize 2.3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Fixed an error which can appear when using sharpness on older CPUs.

• October 20, 2015 2.8.5

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.8.5	Released October 20, 2015	Type ZIP	Filesize 2.3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Fixed a bug which can appear on LivePause call.

• July 15, 2015 2.8.0

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.8.0	Released July 15, 2015	Type ZIP	Filesize 2.4MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Support of DFK ECU010-L34 with serial number property. Added tone mapping.

• February 17, 2015 2.7.33

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.7.33	Released February 17, 2015	Type ZIP	Filesize 2.4MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog The Auto Focus Onepush Running flag now resets correctly after the auto focus has finished.

• February 5, 2015 2.7.32

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.7.32	Released February 5, 2015	Type ZIP	Filesize 2.4MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Video format MJPG (2592x1944) of DFK AFU050-L34 camera can now be used.

• January 14, 2015 2.7.31

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Kaba driver download. Version 2.7.31	Released January 14, 2015	Type ZIP Download meade driver.	Filesize 2.3MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Support for IMX236 based cameras. Support for RGB64 color formats. Several performance improvements.

• June 6, 2014 2.7.9.1152

  Inventec laptops & desktops driver download for windows 10. Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.7.9.1152	Released June 6, 2014	Type ZIP	Filesize 2.1MB
  Requirements Intel Core i3 or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit), Windows 10 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Added new properties: Brightness, sharpness, de-noise, saturation, hue and contrast. Added new property: Highlight reduction. Added new property: White balance temperature controls. Pixelfix for Y16 cameras now works as expected. VideoControl_ExternalTrigger (DirectShow property) can now be set as expected.

• January 1, 2014 2.6.5.1014

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.6.5.1014	Released January 1, 2014	Type ZIP	Filesize 1.9MB
  Requirements Intel Pentium IV or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit) DirectX 9.0c or higher
  Changelog Fixed missing auto-gain for DFK AFU130. Fixed focus when start value is out of auto_focus_range. Fixed problem with AUTOFOCUS_ROI_RIGHT: minimum possibly wrong. Fixed auto focus ROI not working for 21*UC cameras. Fixed crash on load/connect with certain cameras 22/72xUC. Fixed previous exposure settings not being loaded on reconnect. Complete reworking of internal property system. Fixed Windows XP driver load crash. Fixed drop counter to be accessible from DirectShow. Fixed Windows 8 problem with certain video formats needing converters with standard DirectShow filters (e.g. Y800, capturing to an Y800 avi file was not possible). Fixed a problem with Windows 8 usbxhci driver not allowing transfers larger then 4 MB.

• February 26, 2013 2.4.14.851

  Device driver for all The Imaging Source USB cameras except the 33U, 37U, 38U and AFU auto focus series.
  Version 2.4.14.851	Released February 26, 2013	Type ZIP	Filesize 1.9MB
  Requirements Intel Pentium IV or similar, 2 GB RAM USB 3.0 or USB 2.0 controller (depends upon camera model) Graphics card with 24 or 32 bit Windows XP, Windows Vista, Windows 7 (32 & 64 bit), Windows 8 (32 & 64 bit) DirectX 9.0c or higher
  Changelog WHQL certification.