MEM-4500M-16F 16MB Flash Memory for Cisco 4500 Router | eBay
Cisco Router Memory 64MB Type I Compactflash CF Memory Card - China Memory Card and CF Card price | Made-in-China.com
Installing and Removing Field Replaceable Memory in Cisco IAD2420 Series Integrated Access Devices [Cisco IAD2400 Series Integrated Access Devices] - Cisco Systems
128MB Compact Flash Memory for Cisco 2800 2801 2811 2821 2851 Series Router. Equivalent to Cisco MEM2800-128CF= (MemoryMasters) at Amazon.com
Router | oasysadmin
ISR4451-X/K9 - Cisco ISR4451-X/K9 ISR 4451 Router with 4 onboard GE, 3 NIM slots, 1 ISC slot, 2 SM slots, 8GB Flash Memory default, 2GB DRAM default (data plane), 4GB DRAM - serverevolution.com