Open the Device Manager by right clicking “My computer” and selecting control panel. Look under Ports (COM & LPT). You should see an open port named 'USB Serial Port' Right click on the 'USB Serial Port' and choose the 'Update Driver Software' option. Next, choose the 'Browse my computer for Driver software' option. If the device-specific driver is distributed through Windows Update, you can manually update the driver by using Device Manager. For more information about how to do this, see update drivers in Windows 10. If the device is not yet connected, first install the device-specific driver, such as by using the appropriate installer. Open device manager from control Manager by right clicking your computer icon. From the device manager, you’ll observe that your device is detected but its drivers are not correctly installed. It reveals your device by name”QHSUSBBULK” in most instances. Step 8 – Right-click on the device and choose “Update Driver Software“.

TruePort redirects serial COM/TTY based traffic over Ethernet to remote IOLAN(s)

Uninstalling drivers. Uninstalling drivers is the most difficult part of the process, and it’s still not that hard. It’s a necessary step to take in order to install Bluetooth Driver Installer. You’ll need to navigate to your Device Manager through the Windows start menu. Then, you’ll right-click on the device you want and click.

Operating SystemDriverDocumentation
Windows Server 2019
Windows Server 2016
Windows 10 - 64 bit
6.9User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows 10 - 32 bit6.9User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows 7 - 32 bit
Windows 8 - 32 bit
Windows 8.1 - 32 bit
6.9User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows 7 - 64 bit
Windows 8 - 64 bit
Windows 8.1 - 64 bit
Windows Server 2012
Windows Server 2012 R2
6.9User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows Server 2003 - 64 bit
Windows Server 2008 - 64 bit
Windows Server 2008 R2
6.8User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows Server 2003 - 32 bit
Windows Server 2008 - 32 bit
6.8User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows 2000
Windows XP - 32 bit
Windows Vista - 32 bit
6.7User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows XP - 64 bit
Windows Vista - 64 bit
6.7User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows Server 2003 - Itanium
Windows Server 2008 - Itanium
Windows Server 2008 R2 - Itanium
6.7User Guide Release Notes Sample SSL Key/Certificate (RSA)
Windows NT1.1.1User Guide Release Notes
AIX 4.x and 5.x – 32 bit4.1.0User Guide Release Notes
HP-UX, PA-RISC - 11.0/11i v1/11i v2/11i v3
HP-UX, Itanium - 11i v2/11i v3
6.2User Guide Release Notes Sample SSL Key/Certificate (RSA)
HP-UX 101.1.0Release Notes
Linux 2.2.16+
Linux 2.4.x
6.3 - Source RPM
6.3 - Compressed TAR
User Guide Release Notes Sample SSL Key/Certificate (RSA)
Linux 2.6.x, 3.x, 4.x, 5.x
Linux Debian 4.0r4, 6.0.4, 6.0.7
Linux Mandriva 2007, 2009, 2011
Linux openSUSE 10, 11, 12.1, 12.1, 12.3
Linux Red Hat Fedora 7, 9, 16, 17, 18
Linux Red Hat Enterprise 5.2, 6.2, 6.3, 6.4
Linux SUSE Enterprise 10 SP2, 11 SP2
6.10.0 - Source RPM
6.10.0 - Compressed TAR
User Guide Release Notes Sample SSL Key/Certificate (RSA)
NCR UNIX (Lite)1.0.8User Guide Release Notes
SCO OpenServer 56.2User Guide Release Notes Sample SSL Key/Certificate (RSA)
SCO OpenServer 66.2User Guide Release Notes Sample SSL Key/Certificate (RSA)
SCO UnixWare6.2User Guide Release Notes Sample SSL Key/Certificate (RSA)
Solaris (Intel) 32-bit/64-bit6.4.1User Guide Release Notes Sample SSL Key/Certificate (RSA)
Solaris (SPARC) 32-bit/64-bit6.4.1User Guide Release Notes Sample SSL Key/Certificate (RSA)

Download Datronicsoft Port Devices Driver

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.

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…

Port

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.

Make sure to use this one instead: https://github.com/MPParsley/ch340g-ch34g-ch34x-mac-os-x-driver

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

Download datronicsoft port devices driver windows 7

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)

Download

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

Download Datronicsoft Port Devices Driver

Download Datronicsoft Port Devices Driver Updater

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`