Advanced Security Gateway with Built-in Switch,Dual WAN Ports: One 10G SFP+ and One Gigabit RJ45,One 10G SFP+ LAN Port,Embedded Enterprise Software: UniFi Network,3.5" HDD Bay for NVR Storage (2.5" HDD also supported),Dual WAN with Failover Supports dual internet/ISP connections with failover: if the primary WAN connection drops, it will automatically switch to the other WAN connection.,LTE Failover Redundancy Supports the UniFi LTE device for automatic failover to the LTE cellular network. If the wired WAN fails, it will automatically switch to the UniFi LTE, keeping your network online.,Power Supply Redundancy and Failover The UDM Pro supports our PSU failover system, the UniFi SmartPower RPS, model USP-RPS. If the internal power supply unit fails, the proprietary USP RPS interface acts to provide redundant power for backup.