512MB to 1.5GB DRAM Upgrade (1GB+512MB) for Cisco 2901-2921
Cisco MEM-2900-512U1.5GB, 1 GB, 1 x 1 GB, DRAM
Cisco MEM-2900-512U1.5GB. Component for: PC/Server, Internal memory: 1 GB, Memory layout (modules x size): 1 x 1 GB, Internal memory type: DRAM