If your management workstation runs Linux, you can connect to the router without needing to install a special driver, as the Linux kernel includes built-in support for USB console connections via the cdc_acm driver. Here's how:
In the world of high-end service provider routing, few moments are as stressful as staring at a blank terminal window when you need to recover a $200,000 Cisco ASR 9922 router. You have the correct rollover cable. You have the right baud rate (115200). You have verified the COM port. Yet, nothing appears. asr9xxusbconsoledriverszip upd