Cisco Firepower FPR-4150 Network Security/Firewall Appliance - 40GBase-X, 10GBase-X - 40 Gigabit Ethernet - 9.38 GB/s Firewall Throughput - TLS, AES (256-bit), SHA-256, RSA 2048-bit, TLS 1.2 - 20000 VPN - 10 Total Expansion Slots - 50 Hz, 60 Hz - 1U - Rack-mountable, Rail-mountable: