RSP 720 with PFC-3CXL includes:
●  Two Gigabit Ethernet ports (port 1 supports 1-Gbps SFP module; port 2 is configurable for either SFP module or 10/100/1000BASE-TX through a RJ-45 connector
●  Integrated 720-Gbps switch fabric
●  PFC-3CXL (high capacity) and MSFC4
●  Route processor: 1- to 4-GB DRAM (2-GB default)
●  Switch processor: 1- to 2-GB DRAM (1-GB default)
●  Two external Compact Flash Type II slots
●  4-MB NVRAM
●  512-MB internal boot memory (Compact Flash)