A Cisco 1941 router includes the following connections:

The Cisco 1941 ISR also has storage slots to support expanded capabilities. Dual-compact flash memory slots are capable of supporting a 4 GB compact flash card each for increased storage space. Two USB host ports are included for additional storage space and secure token capability.

Compact flash can store the Cisco IOS software image, log files, voice configuration files, HTML files, backup configurations, or any other file needed for the system. By default, only slot 0 is populated with a compact flash card from the factory, and it is the default boot location.

The figure identifies the location of these connections and slots.