WCH USB-SERIAL CH340 Driver Download

The USB-SERIAL CH340 is a device manufactured by WCH. This driver - "CH341_USB_to_Serial.zip" - has been downloaded 21,906 times and is rated 5 out of 5 stars based on 17 reviews. Visitors have successfully installed this driver on PCs running Windows 10, Windows 7 and Windows XP. The total disk space used for this update is 258.5 KB.

17 Ratings

Supported Models









Supported Operating Systems

Windows 11, Windows 10, Windows 10 (64 bit), Windows 8.1, Windows 8.1 (64 bit), Windows 8, Windows 8 (64 bit), Windows 7, Windows 7 (64 bit), Windows 2008, Windows 2008 (64 bit), Windows Vista, Windows Vista (64 bit), Windows 2003, Windows 2003 (64 bit), Windows XP, Windows XP (64 bit), Windows 2000, Windows ME, Windows 98SE, Windows 98

File Name

Additional Notes

This came from the driver CD that came with a cheap CH341 based USB to Serial adapter that had numerous other drivers on the CD as well. This is the correct driver for the serial adapter, and it includes drivers for Windows 7 x64. It also seems to have drivers for Windows 98, 2000, XP, 2003, Vista, and Server 2008 as well.

Uploaded By

JacobGRocks (DG Member) on 24-Jul-2016

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
CH341 USB to Serial/CH340IR.EXE 149.2 KB 15 Apr 2012
CH341 USB to Serial/CH341PT.DLL 6.7 KB 29 Jul 2005
CH341 USB to Serial/CH341S64.SYS 58.4 KB 2 Jun 2009
CH341 USB to Serial/CH341S98.SYS 19.7 KB 11 Jun 2007
CH341 USB to Serial/CH341SER.INF 6.7 KB 24 Aug 2010
CH341 USB to Serial/CH341SER.SYS 39.6 KB 2 Jun 2009
CH341 USB to Serial/CH341SER.VXD 20.1 KB 17 Dec 2008
CH341 USB to Serial/INSTALL/#U6a21#U5757#U8c03#U8bd5.EXE 151.6 KB 28 Dec 2005
CH341 USB to Serial/INSTALL/DLL_LIB/CH341PT.BAS 3.1 KB 29 Jul 2005
CH341 USB to Serial/INSTALL/DLL_LIB/CH341PT.H 2.8 KB 29 Jul 2005
CH341 USB to Serial/INSTALL/DLL_LIB/CH341PT.LIB 5.6 KB 29 Jul 2005
CH341 USB to Serial/INSTALL/DLL_LIB/CH341PT.PAS 2.9 KB 29 Jul 2005
CH341 USB to Serial/INSTALL/README.TXT 10.3 KB 23 Sep 2007
CH341 USB to Serial/SETUP.EXE 65.5 KB 1 Sep 2010
CH341 USB to Serial/ch341SER.CAT 9.7 KB 26 Aug 2010

How to Update USB-SERIAL CH340 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the USB-SERIAL CH340 driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter WCH USB-SERIAL CH340 into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for WCH USB-SERIAL CH340. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with WCH. All company names/logos are properties of their owners.
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