Verify in Device Manager that the COM port number assigned to the cable (e.g., COM5) is the one selected in your radio software. Also, ensure the baud rate in your software matches the CI-V baud rate setting in your Icom radio. A mismatch here is a very common oversight.
Restart your computer to complete the installation. Troubleshooting: When the Driver Update Doesn't Work
, find the "USB-Serial CH340" under "Ports (COM & LPT)," right-click, and select Uninstall device Run the new installer you downloaded. ldc101 usb to civ driver updated
Go to the official and download the "CP210x Universal Windows Driver" [as described in the SailMail USB Driver documentation ]. Extract the downloaded ZIP file.
This article provides a comprehensive overview of updating the in 2026, troubleshooting common connectivity issues, and ensuring maximum performance with your rig. What is the LDC101 USB to CI-V Interface? Verify in Device Manager that the COM port
A interface connects your PC to the 3.5mm "REMOTE" jack on your Icom transceiver. This allows software like WSJT-X , FLDIGI , Ham Radio Deluxe , or Log4OM to control frequency, mode, and PTT (Push-To-Talk). Updated drivers are crucial for several reasons:
: If the driver is blocked, it may be due to "Memory Integrity" settings in Windows 11. You can check this under Windows Security > Device Security > Core Isolation Clone Detection Restart your computer to complete the installation
Sometimes, a simple USB-C to USB-C cable swap can resolve the connection issue.
: The driver supports a bus-powered design, meaning the interface draws all necessary power from the USB port rather than requiring an external supply like the original Icom CT-17. Bi-directional Data Transfer
Complete Setup Guide: LDC101 USB to CI-V Driver Updated for Modern OS