Specifications

Overview of the Hardware and Software
Common Ports
6
Cisco 3900 Series, 2900 Series, and 1900 Series Integrated Services Routers Software
Cisco 1900 Series ISRs
Table 6 lists the slots and ports available on Cisco 1900 series routers. 

To view the installation guide, see the following URL
http://www.cisco.com/en/US/docs/routers/access/1900/hardware/installation/guide/1900_HIG.html
Common Ports
The following ports are common among Cisco 3900 series, 2900 series, and 1900 series routers:
• Gigabit Ethernet RJ45—Ports available through an RJ45 connector.
• Gigabit Ethernet RJ45/SFP—Ports available through RJ45- SFP connectors. Connection supports
fail-over if the secondary connection goes down.
• RS232 Aux—Supports modem control lines and remote administration for box-to-box redundancy
applications.
• RS232 Serial Console—Supports modem control lines and remote administration of the router with
the proprietary cable shipped in the box.
• Type A USB 2.0—Supports USB-based flash memory sticks, security tokens, and USB-compliant
devices.
• Type B mini-port USB Serial Console—Supports modem control lines and remote administration of
the router using a type B USB-compliant cable.
Licensing
Cisco 3900 series, 2900 series, and 1900 series ISRs support Cisco IOS software entitlement. Your router
is shipped with the software image and the corresponding permanent licenses for the technology
packages and features that you specified preinstalled. You do not need to activate or register the software
prior to use. If you need to upgrade or install a new technology package or feature see Software
Activation on Integrated Services Router,
http://www.cisco.com/en/US/docs/routers/access/sw_activation/SA_on_ISR.html.
Table 6 Cisco 1900 Series ISR Routers
Router EHWIC SM
Dbl-Wide
SM ISM PVDM3 WLAN CF
GE (RJ-45)
ports
Cisco 1941 2 0 0 1 0 0 2 2
Cisco 1941W 2 0 0 0 0 1 2 2