USB Console
A single USB 2.0 Type-A receptacle on the front panel of the router provides console access to ROMMON,
Cisco IOS-XE and diagnostics. While it uses the Type-A connector, it operates as a USB peripheral only for
connection to an external host computer. This interface requires the use of a Type-A to Type-A connector
instead of a standard USB cable.
Use of the USB console is mutually exclusive of the RS232 console port. This interface requires the use
of a Type-A to Type-A USB cable.
Note
USB Mass Storage
A single USB 2.0 Type-A receptacle on the front panel of the router allows external USB mass storage devices,
such as standard USB flash drives. This interface is used to load images, load or store configurations, write
logs, and so on.
More than 8 GB is not supported in ROMMON mode,
Note
Zero Touch Provisioning Button
The Zero Touch Provisioning (ZTP) button on the front panel initiates the ZTP process on a short press of
less than eight seconds. Pressing the ZTP button for more than eight seconds causes a board reset.
RS232 Auxiliary Console Port
The RS232 Aux console port provides transmission (Tx), reception (Rx), and ground (Gnd).
The RS232 Aux console port is enabled only through the Cisco-designed cable adapter from USB type
A cable to RJ-45 adapter cable.
Note
This is a debug-only port. it is recommended that this port be used by field service engineers only.
Note
Power Supply and Fans
The router supports AC, D, or a combination of both power supplies in a 1+1 redundant configuration.
Cisco ASR-920-12SZ-IM Aggregation Services Router Hardware Installation Guide
10
Cisco ASR 920 Series Aggregation Services Router Overview
Power Supply and Fans
