This should be located under the "Other devices" or "Universal Serial Bus" category. In Device Manager, double-click on a device marked with a exclamation mark and named "CP2101 USB to UART Bridge Controller" or something similar.Click on Device Manager in the search results. Click the Start orb in the lower-left corner of your desktop and type "device" in the search field.This should prevent automatic installation of Silicon Labs driver version 6.x, which has been found to be problematic with newer Intel Core i3/i5/i7 motherboards. Disconnect and reconnect the instrument to your computer.Disconnect your computer from the internet.In the "Confirm Device Uninstall" dialog box, check "Delete the driver software for this device" and click OK.Right-click on the device and select Uninstall.(Optional) Determine the currently installed driver version as in Step 10 to be 6.x or higher.
Note: If during this step Windows Update insists on automatically installing a different driver version (6.x or higher), you will need to uninstall this driver manually as follows: Make sure the instrument's jumper/switch is set to USB (consult your user manual for details). Ignore and close any windows that appear automatically. Connect the instrument to a USB port on your computer and turn the instrument on.Step 1: Extract files to specified directory (C:\CHI\cp210x44 in the example above). Right-click the file and select "Extract All" to extract the driver files. Download and run (double-click) the file "cp210x44.zip" from the link above.The "Universal Serial Bus" category, you may be better off "beta testing" v4.4 rather than waiting for v6.0 to fail. If you cannot find a "Universal" or "Open" host controller in Device Manager under The communication problem appears to affect all recent computers with Intel Core i3/i5/i7 processors whose motherboards lack an onboard USB 1.x controllerĪnd instead include a USB 2.0 rate-matching hub. when using a low baud rate.Ĭomputer processors reported as unreliable with USB driver 6.x Experience unreliable communication with version 6.x, esp.Instructions for installing legacy driver 4.4 are included below to support users still running software version 12.03 or lower.ĭriver version 4.4 is intended for use on computers which: Please contact us to request your free software upgrade. This issue has been resolved in version 12.04 of our software. If you are using a newer version of our software, click here.