Cisco 2921 Integrated Services Router Build On 25 Years Of Cisco Innovation And Product Leadership. The New Platforms Are Architected To Enable The Next Phase Of Branch-office Evolution, Providing Rich Media Collaboration And Virtualization To The Branch While Maximizing Operational Cost Savings. The New Integrated Services Routers Generation 2 Are Future-enabled With Support For New High Capacity Dsps (digital Signal Processors) For Future Enhanced Video Capabilities, High Powered Service Modules With Improved Availability, Multi-core Cpus, Gigabit Ethernet Switching With Enhanced Poe, And New Energy Visibility And Control Capabilities While Enhancing Overall System Performance. 
 Specifications 
- Product Type: Integrated Services Router 
- Number Of Ports: 3 
- Gigabit Ethernet Port: Yes 
- Interfaces/ports: 3 X Rj-45 10/100/1000base-t Wan, 1 X Rj-45 Rs-232 Auxiliary Management, 2 X Type A Usb 
- Number Of Expansion Slots: 12 
- Expansion Slots: (4 Total) Hwic, (2 Total) Compactflash (cf) Card, (3 Total /2 Free /1 Populated) Pvdm, (1 Total) Sfp (mini-gbic) 
- Compatible Rack Unit: 2u 
- Form Factor: Rack-mountable 
- Dimensions: 3.50 Height X 17.25 Width X 12 Depth 
- Weight: 29 Lb