Cisco UCS 16GB DDR4-2666-MHz RDIMM/PC4-21300/2R/x4 Memory » Vista IT Group
parts-quick M-ASR1K-RP2-16GB 16GB (4 X 4GB) DRAM Memory for Cisco ASR 1000 Series RP2 at Amazon.com
MEM-2900-1GB=1GB DRAM Memory for Cisco Router 2901,2911,2921 at Amazon.com
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 2921/2911/2901 Series MEM-2900-1GB= DRAM Memory Options