What is the Cisco ISR4451-X/K9?
The Cisco ISR4451-X/K9 is a memory module, listed by the manufacturer as "4GE,3NIM,2SM,8G FLASH,4G DRAM". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Cisco ISR4451-X/K9: a memory module (4GE,3NIM,2SM,8G FLASH,4G DRAM). Circular Telecom resells surplus and refurbished units of parts like this, helping operators extend network equipment lifecycles and reduce e-waste.
Common Questions
The Cisco ISR4451-X/K9 is a memory module, listed by the manufacturer as "4GE,3NIM,2SM,8G FLASH,4G DRAM". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Cisco network equipment, including parts such as the ISR4451-X/K9, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue