Two new devices should now be present in Device Manager: a "CP210x USB to UART Bridge Controller" under "Ports (COM & LPT)",Īnd a "USB Composite Device" under "Universal Serial Bus controllers".
Step 6: Search for drivers in the extraction directory from Step 1 (C:\CHI\cp210x44 in the example above). Specify the extraction directory from Step 1 and click Next.Step 5: Do not search automatically for drivers. Select "Browse my computer for driver software".
Step 4: Locate and double-click on CP2101 device.Ĭlick the Update Driver button circled above. This should be located under the "Other devices" or "Universal Serial Bus" category.
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.
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.CH Instruments Software version 12.03 or older (Help > About).Administrative privileges on your computer (please consult your system administrator for details).USB Driver v4.4 Installation Instructions