The Cisco ASA 5580 Adaptive Security Appliances are designed for ultimate interface flexibility and density with six interface card expansion slots supporting up to 24 Gigabit Ethernet ports; 12 10Gigabit Ethernet ports; or combinations. Gigabit Ethernet interfaces are available in 4-port copper or fiber configurations and 10Gigabit Ethernet is available in a 2-port fiber configuration. Gigabit Ethernet and 10Gigabit Ethernet fiber interfaces feature integrated short-range.Cisco ASA5580-4GE-CU= is an ASA 5580 4-port 10/100/1000 Ethernet interface card, RJ45.