Fix: This is a known quirk. Open Device Manager → Right-click Cisco USB Console Device → Properties → Port Settings → Advanced → Change the COM port number to COM1-COM4 (low-numbered ports are more stable).
The cisco-usbconsole-driver-3-1.zip package is widely used because it resolves several legacy headaches: usb console software 3.1 - cisco-usbconsole-driver-3-1.zip
If the COM port appears and disappears intermittently: Fix : This is a known quirk
Fix: This is a known quirk. Open Device Manager → Right-click Cisco USB Console Device → Properties → Port Settings → Advanced → Change the COM port number to COM1-COM4 (low-numbered ports are more stable).
The cisco-usbconsole-driver-3-1.zip package is widely used because it resolves several legacy headaches:
If the COM port appears and disappears intermittently: