RSP 720 4-GB (2 x 2G Modules) Memory Upgrade, Spare
Cisco MEM-RSP720-4G=, 4 GB, 2 x 2 GB, DRAM
Cisco MEM-RSP720-4G=. Component for: PC/server, Internal memory: 4 GB, Memory layout (modules x size): 2 x 2 GB, Internal memory type: DRAM