You need a standard K1 2-pin USB programming cable (the same style used for Baofeng and Retevis radios).
If your software is hardcoded to look at COM1, but Windows assigned your cable to COM5, the software cannot see the radio. Always match the software setting to the Device Manager assignment. wln kd-c52 software download
You need :
“The ease of setup, supported by accessible software tools, ensures that users can get started quickly without technical hurdles.” AliExpress You need a standard K1 2-pin USB programming
: You must use a standard K-type (Kenwood 2-pin) USB programming cable . Standard USB charging data lines plugged into the device side port only supply power and cannot write data. supported by accessible software tools
Set to High (2W) for maximum range, or Low (0.5W) to preserve battery life.