MEM3800-256U1024D
256 to 1024MB DDR DRAM factory upgrade for Cisco 3800
sku: SKU22181 MEM3800-256U512D
256 to 512MB DRAM (single DIMM) Factory upgrade for 3800
sku: SKU22191 MEM3800-256U768D
256 to 768MB DDR DRAM factory upgrade for the Cisco 3800
sku: SKU22201