WAN Connectivity: Integrated ADSL2/2+ Modem, 1x Gigabit Ethernet WAN, 2x USB ports (for 3G/4G modems, storage, or sensors). USB Ports: 2x USB 2.0 for 3G/4G, printer sharing, or NAS. Load Balancing & Failover: Use multiple internet connections for increased throughput and reliability.
eBay