Ensure that the driver is installed correctly and that the cable is properly connected. If the LED still does not light, the USB console may be disabled in the Cisco device configuration, or the device may not support USB console operation at all. Check the hardware documentation.
Given these issues, I strongly recommend that Windows 10 and Windows 11 users and use the Silicon Labs CP210x Universal Windows Driver instead. It is fully supported, regularly updated, and works flawlessly with Cisco USB console cables. usb console software 31 ciscousbconsoledriver31zip install