![Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/390001-400000/391001-392000/391829.eps/_jcr_content/renditions/391829.jpg)
Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco
![Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/340001-350000/347001-348000/347341.eps/_jcr_content/renditions/347341.jpg)
Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco
![Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/340001-350000/346001-347000/346387.tif/_jcr_content/renditions/346387.jpg)
Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco
![Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers - Install and Upgrade Internal Modules and FRUs [Cisco 4000 Series Integrated Services Routers] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/340001-350000/346001-347000/346386.tif/_jcr_content/renditions/346386.jpg)