The Cisco ASA 5555-X Firewall Edition (ASA5555-CU-2AC-K9) is a 1U rack-mountable network security appliance with 1.4 Gbit/s firewall throughput, 14 Gigabit Ethernet data ports, and dual AC power supplies. It provides enterprise-grade firewall protection with 3DES/AES encryption, 5000 IPsec VPN peers, and 2 security contexts for midsize businesses and enterprise networks.