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Standard USB cables won't work "out of the box" with Cisco hardware because the router uses a specialized USB-to-serial UART interface. Without the correct driver: Your PC will show an "Unknown Device" in Device Manager. No COM port will be assigned.

Mini-USB cables are notorious for being "charge-only." Ensure yours supports data transfer. asr9xxusbconsoledriverszip upd

In Windows Power Options, disable this feature, as it can sometimes put the virtual COM port to sleep. Standard USB cables won't work "out of the