1GB DRAM for Cisco 2901, 2911, 2921 ISR (only as spare)
Cisco MEM-2900-1GB=, 1 GB, 1 x 1 GB, DRAM
Cisco MEM-2900-1GB=. Component for: PC/server, Internal memory: 1 GB, Memory layout (modules x size): 1 x 1 GB, Internal memory type: DRAM