Home » usb-serial ch340 Use the links on this page to download the latest version of USB-SERIAL CH340 drivers. All drivers available for download have been scanned by antivirus program. I am trying to get a USB to Serial cable installed on Windows 7 (64-bit). Radio Shack Model: 26-949. The cable works fine in XP. I have tried Radio Shack, FTDI, Prolific drivers, but to no avail. When I try to load the drivers, it does not recognize the device.

Introduction: Download windows driver from here. Automatic installation: If you are connected to internet, just plug CH340 USB to serial converter to your computer, windows will detect and download driver. You will see following message on successful installation. CH340 is installed on comport 23. Manual installation Follow following instruction to manually install driver of CH340.

3.1 Download driver from the link provided above in this tutorial. 3.2 Go to stat menu. 3.3 Right click on My Computer. 3.5 Click on Properties 3.6 Select Device Manager form left control panel 3.7 Expand USB options available 3.8 Right click on CH340 3.9 Select Update driver 3.10 Select browse option 3.11 Extract the downloaded folder, downloaded in step 3.1 3.12 locate step 3.10 browse to the extracted folder 3.13 follow the further instruction of your computer 3.14 your CH340 device will be installed 3.15 Note down the comport allotted to your device. If you have any query please write us at Thanks and Regards Content Development Team Robo India.

For many of these, Win-7 will recognize it automatically and load drivers with no further to-do. Some off-brand stuff may come with its own driver CD to load.

You should know that there is a lot of junk/knock-off/counterfeit USB-serial stuff out there that doesn't work very well. Even if you get a driver to work, they frequently have comms problems.

Personally, I'd return it and get something better. Air-link, IOgear, SIIG makes good stuff. Other brands may be OK as well if they use the FTDI / prolific chipsets but its hard to know.

In 2015, one area has been released successfully. Grafik proverki znanij po pozharnoj bezopasnosti obrazec.

There are some long threads here discussing the problem. After messing around with a few bummers, I finally went with a PCI-E 4X serial board from SIIG.

Works perfectly all the time with Win7-64 Pro.