Dual Gigabit Ethernet WAN 4 x Gigabit Ethernet PoE+ capable with power budget up to 60 watts (2952P model) 2 USB ports for 3G/4G cellular modem, network storage, or USB temperature sensor Up to 4 WAN for load-balancing and failover High-Performance VPN allowing 100 concurrent tunnels, and up to 50 concurrent SSL VPN IPv6 support on WAN & LAN Up to 8 IP subnet on LAN, PPPoE Server support High Availability (Hardware Redundancy) support Integrated controller for up to 30 VigorAP and up to 10 VigorSwitch