: You unplug the USB cable from the Cisco device, and the COM port disappears from Device Manager. It does not reappear after reconnecting. Hotfix solution in v3.1 : Version 3.1 changed the driver’s SurpriseRemoval handling. It now forces a full re-enumeration upon reconnection. If you still experience this, try a different USB port or disable USB selective suspend in Windows Power Options.
Plug the USB cable into your laptop and the Cisco device's USB console port. The LED on the device should turn green. ⚙️ Terminal Software Configuration usb console software 31 ciscousbconsoledriver31zip hot