Cisco 12000 Memory Option MEM-LC4-512 512 MB (MEM-LC4-512)

U rackmount, 7x Gigabit Ethernet, 1x Combo port (SFP or Gigabit Ethernet), 1xSFP+ cage, 9 cores x 1.2GHz CPU, 2GB RAM, LCD panel, Dual Power supplies, SmartCard slot, RouterOS L6

1U rackmount, 12x Gigabit Ethernet, 4xSFP cages, LCD, 36 cores x 1.2GHz CPU, 4GB RAM, 24 mpps fastpath, Up to 16Gbit/s throughput, RouterOS L6, Dual PSU

1U rackmount, 5xEthernet, 5xGigabit Ethernet, USB, LCD, PoE out on port 10, 600MHz CPU, 128MB RAM, RouterOS L5

5xEthernet with PoE output for four ports, USB, 650MHz CPU, 64MB RAM, RouterOS L4