Amazon.com: MEM-2900-2GB= 2GB DRAM Memory for Cisco Router 2921 (PARTS-QUICK ® BRAND) : Electronics
Cisco Integrated Service Router (ISR) Router 2.2Ghz CPU 1GB RAM (C926-4P)
CMS 512MB (1X512MB) DDR1 2100 266MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with Cisco® 2811 Router Main Memory DMemory Ram Upgrade2811-512D for Server Only - C89 at Amazon.com
Cisco MEM-FLSH-8G RAM/Flash Memory | IT4TRADE.COM
Cisco 2800 Series Router Internal Memory Upgrade - YouTube
parts-quick 256MB Kit 2 X 128MB DRAM Memory for Cisco Router 2610XM Cisco Router 2611XM Cisco Router 2620XM Cisco Router 2621XM Cisco Router 2650XM Cisco Router 2651XM. Equivalent to MEM2600XM-128D at Amazon.com