Zyxel USG FLEX 50. Firewall throughput: 0.35 Gbit/s, VPN throughput: 0.09 Gbit/s. Heat dissipation: 40.92 BTU/h, Concurrent users: 15 user(s), Mean time between failures (MTBF): 655130 h. Security algorithms: 3DES, 256-bit AES, DES, HTTPS, IPSec, MD5, SHA-1, SHA-2. Management protocols: SNMP v1, v2c, v3. Connectivity technology: Wired, Ethernet LAN data rates: 10,100,1000 Mbit/s, WAN connection: Ethernet (RJ-45)