2GB DRAM for Cisco 2901, 2911, 2921 ISR (only as spare)
Cisco MEM-2900-2GB=, 2 GB, 1 x 2 GB, DRAM
Cisco MEM-2900-2GB=. Component for: PC/server, Internal memory: 2 GB, Memory layout (modules x size): 1 x 2 GB, Internal memory type: DRAM